we also have three other operating segments : cdw advanced services ; canada ; and kelway , each of which do not meet the reportable segment quantitative thresholds and , accordingly , are included in an all other category ( “ other ” ) . for additional information relating to kelway , see note 3 ( acquisition ) to these consolidated financial statements . the cdw advanced services business consists primarily of customized engineering services delivered by technology specialists and engineers , and managed services that include infrastructure as a service ( “ iaas ” ) offerings . effective january 1 , 2016 , the cdw advanced services business will be included in our corporate and public segments and other will be comprised of canada and kelway . revenues in the u.s. from the sale of hardware , software , custom configuration and third-party provided services are recorded within our corporate and public segments . we may sell all or only select products that our vendor partners offer . each vendor partner agreement provides for specific terms and conditions , which may include one or more of the following : product return privileges , price protection policies , purchase discounts and vendor incentive programs , such as purchase or sales rebates and cooperative advertising reimbursements . we also resell software for major software publishers . our agreements with software publishers allow the end-user customer to acquire software or licensed products and services . in addition to helping our customers determine the best software solutions for their needs , we help them manage their software agreements , including warranties and renewals . a significant portion of our advertising and marketing expenses is reimbursed through cooperative advertising programs with our vendor partners . these programs are at the discretion of our vendor partners and are typically tied to sales or other commitments to be met by us within a specified period of time . 30 trends and key factors affecting our financial performance we believe the following trends may have an important impact on our financial performance : our public segment sales are impacted by government spending policies , budget priorities and revenue levels . an adverse change in any of these factors could cause our public segment customers to reduce their purchases or to terminate or not renew contracts with us , which could adversely affect our business , results of operations or cash flows . for the year ended december 31 , 2015 , sales to federal customers increased year-over-year in the mid-teens as we continued to benefit from strategic changes made to better align with new federal government purchasing programs implemented last year . during the same period , sales to state and local customers also increased year-over-year in the mid-teens , driven by the continued focus on public safety . meeting k-12 customer digital curriculum testing needs through sales of client devices was a significant contributor to education sales throughout 2014 and into early 2015. education sales decreased slightly in 2015 as a decline in k-12 client device sales was partially offset by an increase in netcomm sales . in 2015 , we were named as provider on both the largest number of applications and the largest dollar amounts requested for funds by k-12 customers to support internal connections for the 2014-2015 program year of the u.s. federal communications commission e-rate program . the amount and timing of e-rate funds approval and customer implementation is not certain . an important factor affecting our ability to generate sales and achieve our targeted operating results is the impact of general economic conditions on our customers ' willingness to spend on information technology . during the year ended december 31 , 2015 , global economic signals were mixed . we continue to closely monitor macroeconomic conditions . uncertainties related to potential changes in tax and regulatory policy , potential interest rate increases , weakening consumer and business confidence or increased unemployment could result in reduced or deferred spending on information technology products and services by our customers and result in increased competitive pricing pressures . we believe that our customers ' transition to more complex technology solutions will continue to be an important growth area for us in the future . however , because the market for technology products and services is highly competitive , our success at capitalizing on this transition will be based on our ability to tailor specific solutions to customer needs , the quality and breadth of our product and service offerings , the knowledge and expertise of our sales force , price , product availability and speed of delivery . during the year ended december 31 , 2015 , customer priorities continued to shift away from last year 's focus on client devices towards more integrated solutions , which grew substantially faster than transactional sales . key business metrics our management monitors a number of financial and non-financial measures and ratios on a regular basis in order to track the progress of our business and make adjustments as necessary . we believe that the most important of these measures and ratios include average daily sales , gross margin , operating margin , net income , non-gaap net income , net income per common share , non-gaap net income per diluted share , ebitda and adjusted ebitda , free cash flow , return on invested capital , cash and cash equivalents , net working capital , cash conversion cycle ( defined to be days of sales outstanding in accounts receivable plus days of supply in inventory minus days of purchases outstanding in accounts payable , based on a rolling three-month average ) , debt levels including available credit and leverage ratios , sales per coworker , and coworker turnover . these measures and ratios are compared to standards or objectives set by management , so that actions can be taken , as necessary , in order to achieve the standards and objectives . story_separator_special_tag adjusted ebitda is also the primary measure used in certain key covenants and definitions contained in the credit agreement governing our term loan , including the excess cash flow payment provision , the restricted payment covenant and the net leverage ratio . these covenants and definitions are material components of the term loan as they are used in determining the interest rate applicable to the term loan , our ability to make certain investments , incur additional debt and make restricted payments , such as dividends and share repurchases , as well as whether we are required to make additional principal prepayments on the term loan beyond the quarterly amortization payments . for further details regarding the term loan , see note 8 ( long-term debt ) to the accompanying consolidated financial statements . non-gaap net income non-gaap net income was $ 503.5 million for the year ended december 31 , 2015 , an increase of $ 93.6 million , or 22.8 % , compared to $ 409.9 million for the year ended december 31 , 2014 . 36 replace_table_token_11_th ( 1 ) includes amortization expense for acquisition-related intangible assets , primarily customer relationships , customer contracts and trade names . ( 2 ) represents our 35 % share of an expense related to certain equity awards granted by one of the sellers to kelway coworkers in july 2015 prior to our acquisition of kelway . ( 3 ) primarily includes expenses related to the acquisition of kelway . ( 4 ) represents the gain resulting from the remeasurement of our previously held 35 % equity investment to fair value upon the completion of the acquisition of kelway . ( 5 ) primarily includes expenses related to the consolidation of office locations north of chicago and secondary-offering-related expenses . ( 6 ) based on a normalized effective tax rate of 38.0 % ( 39.0 % prior to the kelway acquisition ) , except for the non-cash equity-based compensation from our equity investment and the gain resulting from the remeasurement of our previously held 35 % equity investment to fair value upon the completion of the acquisition of kelway , which were tax effected at a rate of 35.4 % . the aggregate adjustment for income taxes also includes a $ 4.0 million deferred tax benefit recorded during the year ended december 31 , 2015 as a result of a tax rate reduction in the united kingdom and additional tax expense during the year ended december 31 , 2015 of $ 3.3 million as a result of recording withholding tax on the unremitted earnings of our canadian subsidiary . additionally , note that certain acquisition costs are non-deductible . ( 7 ) includes the impact of consolidating five months for the year ended december 31 , 2015 of kelway 's financial results . adjusted ebitda adjusted ebitda was $ 1,018.5 million for the year ended december 31 , 2015 , an increase of $ 111.5 million , or 12.3 % , compared to $ 907.0 million for the year ended december 31 , 2014 . as a percentage of net sales , adjusted ebitda was 7.8 % and 7.5 % for the years ended december 31 , 2015 and 2014 , respectively . 37 replace_table_token_12_th ( 1 ) represents our share of net ( income ) loss from our equity investments . our share of kelway 's net loss includes our 35 % share of an expense related to certain equity awards granted by one of the sellers to kelway coworkers in july 2015 prior to the acquisition . ( 2 ) primarily includes expenses related to the acquisition of kelway . ( 3 ) represents the gain resulting from the remeasurement of our previously held 35 % equity investment to fair value upon the completion of the acquisition of kelway . ( 4 ) primarily includes certain historical retention costs , unusual , non-recurring litigation matters , secondary-offering-related expenses and expenses related to the consolidation of office locations north of chicago . ( 5 ) includes the impact of consolidating five months for the year ended december 31 , 2015 of kelway 's financial results . organic net sales growth and organic net sales growth on constant currency basis organic net sales , which excludes the impact of the acquisition of kelway , increased $ 563.5 million , or 4.7 % , to $ 12,638.0 million for the year ended december 31 , 2015 , compared to $ 12,074.5 million for the year ended december 31 , 2014 . organic net sales on a constant currency basis , which excludes the impact of foreign currency translation , for the year ended december 31 , 2015 increased $ 635.0 million , or 5.3 % , to $ 12,638.0 million , compared to $ 12,003.0 million for the year ended december 31 , 2014 . replace_table_token_13_th ( 1 ) represents five months for the year ended december 31 , 2015 of kelway 's financial results . ( 2 ) represents the effect of translating the prior year results of our canadian subsidiary at the average exchange rates applicable in the current year . 38 year ended december 31 , 2014 compared to year ended december 31 , 2013 results of operations , in dollars and as a percentage of net sales , for the years ended december 31 , 2014 and 2013 are as follows : replace_table_token_14_th net sales net sales by segment , in dollars and as a percentage of total net sales , and the year-over-year dollar and percentage change in net sales for the years ended december 31 , 2014 and 2013 are as follows : replace_table_token_15_th ( 1 ) there were 254 selling days for the years ended december 31 , 2014 and 2013. total net sales in 2014 increased $ 1,305.9 million , or 12.1 % , to $ 12,074.5 million , compared to $ 10,768.6 million in 2013. the increase in total net sales was primarily

cash flows cash flows from operating , investing and financing activities are as follows : replace_table_token_21_th 45 operating activities cash flows from operating activities are as follows : replace_table_token_22_th ( 1 ) includes items such as deferred income taxes , depreciation and amortization , equity-based compensation expense , gain on remeasurement of equity method investment , loss ( income ) from equity method investment and net loss on extinguishments of long-term debt . ( 2 ) the increase in cash flows reflected stronger operating results driven by organic sales growth and the impact of consolidating five months of kelway financial results . a decrease in the net loss on extinguishments of long-term debt , as a result of fewer debt refinancing activities in 2015 as compared to 2014 , and lower interest expense , partially offset by higher income tax expense , also contributed to the strong operating results . ( 3 ) the decrease in cash flows was driven by a higher accounts receivable balance at december 31 , 2015 driven by higher sales in our public segment where customers generally take longer to pay than customers in our corporate segment , slower government payments in certain states due to budget issues and the lower accounts receivable balance at december 31 , 2014 driven by early payments from certain customers . ( 4 ) the decrease in cash flows was primarily due to the lower inventory balance as of december 31 , 2014 as a result of the timing of inventory receipts and earlier than expected inventory shipments at the end of 2014 due to accelerated customer roll-outs and an increase in inventory on-hand as of december 31 , 2015 to support the growth in the business . ( 5 ) the increase in cash flows was primarily due to the timing of inventory purchases , longer payment terms with certain vendors and growth in the business . replace_table_token_23_th ( 1 ) includes items such as depreciation and amortization , equity-based compensation expense and net loss on extinguishments of long-term debt . ( 2 ) the increase in cash flows reflected stronger operating results in 2014 compared to 2013 .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```cash flows cash flows from operating , investing and financing activities are as follows : replace_table_token_21_th 45 operating activities cash flows from operating activities are as follows : replace_table_token_22_th ( 1 ) includes items such as deferred income taxes , depreciation and amortization , equity-based compensation expense , gain on remeasurement of equity method investment , loss ( income ) from equity method investment and net loss on extinguishments of long-term debt . ( 2 ) the increase in cash flows reflected stronger operating results driven by organic sales growth and the impact of consolidating five months of kelway financial results . a decrease in the net loss on extinguishments of long-term debt , as a result of fewer debt refinancing activities in 2015 as compared to 2014 , and lower interest expense , partially offset by higher income tax expense , also contributed to the strong operating results . ( 3 ) the decrease in cash flows was driven by a higher accounts receivable balance at december 31 , 2015 driven by higher sales in our public segment where customers generally take longer to pay than customers in our corporate segment , slower government payments in certain states due to budget issues and the lower accounts receivable balance at december 31 , 2014 driven by early payments from certain customers . ( 4 ) the decrease in cash flows was primarily due to the lower inventory balance as of december 31 , 2014 as a result of the timing of inventory receipts and earlier than expected inventory shipments at the end of 2014 due to accelerated customer roll-outs and an increase in inventory on-hand as of december 31 , 2015 to support the growth in the business . ( 5 ) the increase in cash flows was primarily due to the timing of inventory purchases , longer payment terms with certain vendors and growth in the business . replace_table_token_23_th ( 1 ) includes items such as depreciation and amortization , equity-based compensation expense and net loss on extinguishments of long-term debt . ( 2 ) the increase in cash flows reflected stronger operating results in 2014 compared to 2013 .
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 Suspicious Activity Report : we also have three other operating segments : cdw advanced services ; canada ; and kelway , each of which do not meet the reportable segment quantitative thresholds and , accordingly , are included in an all other category ( “ other ” ) . for additional information relating to kelway , see note 3 ( acquisition ) to these consolidated financial statements . the cdw advanced services business consists primarily of customized engineering services delivered by technology specialists and engineers , and managed services that include infrastructure as a service ( “ iaas ” ) offerings . effective january 1 , 2016 , the cdw advanced services business will be included in our corporate and public segments and other will be comprised of canada and kelway . revenues in the u.s. from the sale of hardware , software , custom configuration and third-party provided services are recorded within our corporate and public segments . we may sell all or only select products that our vendor partners offer . each vendor partner agreement provides for specific terms and conditions , which may include one or more of the following : product return privileges , price protection policies , purchase discounts and vendor incentive programs , such as purchase or sales rebates and cooperative advertising reimbursements . we also resell software for major software publishers . our agreements with software publishers allow the end-user customer to acquire software or licensed products and services . in addition to helping our customers determine the best software solutions for their needs , we help them manage their software agreements , including warranties and renewals . a significant portion of our advertising and marketing expenses is reimbursed through cooperative advertising programs with our vendor partners . these programs are at the discretion of our vendor partners and are typically tied to sales or other commitments to be met by us within a specified period of time . 30 trends and key factors affecting our financial performance we believe the following trends may have an important impact on our financial performance : our public segment sales are impacted by government spending policies , budget priorities and revenue levels . an adverse change in any of these factors could cause our public segment customers to reduce their purchases or to terminate or not renew contracts with us , which could adversely affect our business , results of operations or cash flows . for the year ended december 31 , 2015 , sales to federal customers increased year-over-year in the mid-teens as we continued to benefit from strategic changes made to better align with new federal government purchasing programs implemented last year . during the same period , sales to state and local customers also increased year-over-year in the mid-teens , driven by the continued focus on public safety . meeting k-12 customer digital curriculum testing needs through sales of client devices was a significant contributor to education sales throughout 2014 and into early 2015. education sales decreased slightly in 2015 as a decline in k-12 client device sales was partially offset by an increase in netcomm sales . in 2015 , we were named as provider on both the largest number of applications and the largest dollar amounts requested for funds by k-12 customers to support internal connections for the 2014-2015 program year of the u.s. federal communications commission e-rate program . the amount and timing of e-rate funds approval and customer implementation is not certain . an important factor affecting our ability to generate sales and achieve our targeted operating results is the impact of general economic conditions on our customers ' willingness to spend on information technology . during the year ended december 31 , 2015 , global economic signals were mixed . we continue to closely monitor macroeconomic conditions . uncertainties related to potential changes in tax and regulatory policy , potential interest rate increases , weakening consumer and business confidence or increased unemployment could result in reduced or deferred spending on information technology products and services by our customers and result in increased competitive pricing pressures . we believe that our customers ' transition to more complex technology solutions will continue to be an important growth area for us in the future . however , because the market for technology products and services is highly competitive , our success at capitalizing on this transition will be based on our ability to tailor specific solutions to customer needs , the quality and breadth of our product and service offerings , the knowledge and expertise of our sales force , price , product availability and speed of delivery . during the year ended december 31 , 2015 , customer priorities continued to shift away from last year 's focus on client devices towards more integrated solutions , which grew substantially faster than transactional sales . key business metrics our management monitors a number of financial and non-financial measures and ratios on a regular basis in order to track the progress of our business and make adjustments as necessary . we believe that the most important of these measures and ratios include average daily sales , gross margin , operating margin , net income , non-gaap net income , net income per common share , non-gaap net income per diluted share , ebitda and adjusted ebitda , free cash flow , return on invested capital , cash and cash equivalents , net working capital , cash conversion cycle ( defined to be days of sales outstanding in accounts receivable plus days of supply in inventory minus days of purchases outstanding in accounts payable , based on a rolling three-month average ) , debt levels including available credit and leverage ratios , sales per coworker , and coworker turnover . these measures and ratios are compared to standards or objectives set by management , so that actions can be taken , as necessary , in order to achieve the standards and objectives . story_separator_special_tag adjusted ebitda is also the primary measure used in certain key covenants and definitions contained in the credit agreement governing our term loan , including the excess cash flow payment provision , the restricted payment covenant and the net leverage ratio . these covenants and definitions are material components of the term loan as they are used in determining the interest rate applicable to the term loan , our ability to make certain investments , incur additional debt and make restricted payments , such as dividends and share repurchases , as well as whether we are required to make additional principal prepayments on the term loan beyond the quarterly amortization payments . for further details regarding the term loan , see note 8 ( long-term debt ) to the accompanying consolidated financial statements . non-gaap net income non-gaap net income was $ 503.5 million for the year ended december 31 , 2015 , an increase of $ 93.6 million , or 22.8 % , compared to $ 409.9 million for the year ended december 31 , 2014 . 36 replace_table_token_11_th ( 1 ) includes amortization expense for acquisition-related intangible assets , primarily customer relationships , customer contracts and trade names . ( 2 ) represents our 35 % share of an expense related to certain equity awards granted by one of the sellers to kelway coworkers in july 2015 prior to our acquisition of kelway . ( 3 ) primarily includes expenses related to the acquisition of kelway . ( 4 ) represents the gain resulting from the remeasurement of our previously held 35 % equity investment to fair value upon the completion of the acquisition of kelway . ( 5 ) primarily includes expenses related to the consolidation of office locations north of chicago and secondary-offering-related expenses . ( 6 ) based on a normalized effective tax rate of 38.0 % ( 39.0 % prior to the kelway acquisition ) , except for the non-cash equity-based compensation from our equity investment and the gain resulting from the remeasurement of our previously held 35 % equity investment to fair value upon the completion of the acquisition of kelway , which were tax effected at a rate of 35.4 % . the aggregate adjustment for income taxes also includes a $ 4.0 million deferred tax benefit recorded during the year ended december 31 , 2015 as a result of a tax rate reduction in the united kingdom and additional tax expense during the year ended december 31 , 2015 of $ 3.3 million as a result of recording withholding tax on the unremitted earnings of our canadian subsidiary . additionally , note that certain acquisition costs are non-deductible . ( 7 ) includes the impact of consolidating five months for the year ended december 31 , 2015 of kelway 's financial results . adjusted ebitda adjusted ebitda was $ 1,018.5 million for the year ended december 31 , 2015 , an increase of $ 111.5 million , or 12.3 % , compared to $ 907.0 million for the year ended december 31 , 2014 . as a percentage of net sales , adjusted ebitda was 7.8 % and 7.5 % for the years ended december 31 , 2015 and 2014 , respectively . 37 replace_table_token_12_th ( 1 ) represents our share of net ( income ) loss from our equity investments . our share of kelway 's net loss includes our 35 % share of an expense related to certain equity awards granted by one of the sellers to kelway coworkers in july 2015 prior to the acquisition . ( 2 ) primarily includes expenses related to the acquisition of kelway . ( 3 ) represents the gain resulting from the remeasurement of our previously held 35 % equity investment to fair value upon the completion of the acquisition of kelway . ( 4 ) primarily includes certain historical retention costs , unusual , non-recurring litigation matters , secondary-offering-related expenses and expenses related to the consolidation of office locations north of chicago . ( 5 ) includes the impact of consolidating five months for the year ended december 31 , 2015 of kelway 's financial results . organic net sales growth and organic net sales growth on constant currency basis organic net sales , which excludes the impact of the acquisition of kelway , increased $ 563.5 million , or 4.7 % , to $ 12,638.0 million for the year ended december 31 , 2015 , compared to $ 12,074.5 million for the year ended december 31 , 2014 . organic net sales on a constant currency basis , which excludes the impact of foreign currency translation , for the year ended december 31 , 2015 increased $ 635.0 million , or 5.3 % , to $ 12,638.0 million , compared to $ 12,003.0 million for the year ended december 31 , 2014 . replace_table_token_13_th ( 1 ) represents five months for the year ended december 31 , 2015 of kelway 's financial results . ( 2 ) represents the effect of translating the prior year results of our canadian subsidiary at the average exchange rates applicable in the current year . 38 year ended december 31 , 2014 compared to year ended december 31 , 2013 results of operations , in dollars and as a percentage of net sales , for the years ended december 31 , 2014 and 2013 are as follows : replace_table_token_14_th net sales net sales by segment , in dollars and as a percentage of total net sales , and the year-over-year dollar and percentage change in net sales for the years ended december 31 , 2014 and 2013 are as follows : replace_table_token_15_th ( 1 ) there were 254 selling days for the years ended december 31 , 2014 and 2013. total net sales in 2014 increased $ 1,305.9 million , or 12.1 % , to $ 12,074.5 million , compared to $ 10,768.6 million in 2013. the increase in total net sales was primarily

