defense business is buoyed by the relevance of our programs to the military 's funding priorities , the diversity of our programs and customers within the budget , our insight into customer requirements stemming from our incumbency on core programs , our ability to evolve our products to address a fast-changing threat environment and our proven track record of successful contract execution . we continue to pursue opportunities presented by international demand for military equipment and information technologies from our indigenous international operations and through exports from our u.s. businesses . while the revenue potential can be significant , international defense budgets , much like u.s. budgets , are subject to unpredictable issues of contract award timing , changing priorities and overall spending pressures . as a result of the demonstrated success of our products and services , we would expect our international sales and exports to grow subject to overall economic conditions . in our aerospace group , business-jet market conditions were steady in 2012. the group benefited from robust flying hours across the installed base of gulfstream aircraft , improved large-cabin order interest from north american corporate customers and lower customer contract defaults . we expect our continued investment in new aircraft products to support aerospace 's long-term growth , as evidenced by the group 's newest aircraft offerings , the g280 and the g650 . similarly , we believe that aircraft-service revenues provide the group diversified exposure to aftermarket sales fueled by continued growth in the global installed business-jet fleet . results of operations introduction an understanding of our accounting practices is important to an evaluation of our operating results . we recognize the majority of our revenues using the percentage-of-completion method of accounting . the following paragraphs explain how this method is applied in recognizing revenues and operating costs in our aerospace and defense business groups . in the aerospace group , contracts for new aircraft have two major phases : the manufacture of the “ green ” aircraft and the aircraft 's outfitting , which includes exterior painting and installation of customer-selected interiors . we record revenues on these contracts at the completion of these two phases : when green aircraft are delivered to and accepted by the customer , and when the customer accepts final delivery of the outfitted aircraft . revenues in the aerospace group 's other original equipment manufacturers ( oems ) completions and services businesses are recognized as work progresses or upon delivery of services . changes in revenues result from the number and mix of new aircraft deliveries ( green and outfitted ) , progress on aircraft completions and the level of aircraft service activity during the period . the majority of the aerospace group 's operating costs relates to new aircraft production for firm orders and consists of labor , material and overhead costs . the costs are accumulated in production lots and recognized as operating costs at green aircraft delivery based on the estimated average unit cost in a production lot . while changes in the estimated average unit cost for a production lot impact the level of operating costs , the amount of operating costs reported in a given period is based largely on the number and type of aircraft delivered . operating costs in the aerospace group 's completions and services businesses are generally recognized as incurred . 27 for new aircraft , operating earnings and margins are a function of the prices of our aircraft , our operational efficiency in manufacturing and outfitting the aircraft and the mix of aircraft deliveries between the higher-margin large-cabin and lower-margin mid-cabin aircraft . additional factors affecting the group 's earnings and margins include the volume , mix and profitability of completions and services work performed , the market for pre-owned aircraft and the level of general and administrative ( g & a ) and net research and development ( r & d ) costs incurred by the group . in the defense groups , revenue on long-term government contracts is recognized as work progresses , either as products are produced or services are rendered . as a result , changes in revenues are discussed generally in terms of volume , typically measured by the level of activity on individual contracts or programs . year-over-year variances attributed to volume are due to changes in production or service levels and delivery schedules . operating costs for the defense groups consist of labor , material , subcontractor and overhead costs and are generally recognized as incurred . variances in costs recognized from period to period primarily reflect increases and decreases in production or activity levels on individual contracts and , therefore , result largely from the same factors that drive variances in revenues . operating earnings and margins in the defense groups are driven by changes in volume , performance or contract mix . performance refers to changes in profitability based on revisions to estimates at completion on individual contracts . these revisions may result from increases or decreases to the estimated value of the contract , the estimated costs to complete or both . therefore , changes in costs incurred in the period do not necessarily impact profitability . it is only when total estimated costs at completion change that profitability may be impacted . contract mix refers to changes in the volume of higher- vs. lower-margin work . higher or lower margins can be inherent in the contract type ( e.g . , fixed-price/cost-reimbursable ) or type of work ( e.g . , development/production ) . 28 consolidated overview replace_table_token_9_th review of 2011 vs. 2012 replace_table_token_10_th our revenues decreased in 2012 compared with 2011. revenues decreased in the information systems and technology 's mobile communication systems business and on several international wheeled vehicle contracts in the combat systems group . these decreases were partially offset by higher revenues in the aerospace group due to increased deliveries of g650 aircraft . story_separator_special_tag 2013 outlook we expect the marine systems group 's 2013 revenues to increase approximately 2 percent from 2012 . with the completion of the t-ake program , operating margins are expected to decline to the low- to mid- 9 percent range in 2013 . our 2013 outlook assumes the u.s. government operates under a cr in fy 2013 and there are no significant reductions to the proposed defense budget . information systems and technology review of 2011 vs. 2012 replace_table_token_23_th operating results the information systems and technology group 's revenues decreased in 2012 compared with 2011 . the decrease consisted of the following : mobile communication systems $ ( 1,086 ) information technology ( it ) solutions and mission support services ( 56 ) intelligence , surveillance and reconnaissance ( isr ) systems ( 62 ) total decrease $ ( 1,204 ) the decrease in revenues in the mobile communication systems business was driven by slowed defense spending , protracted u.s. customer acquisition cycles and a slower than expected transition to follow-on work on several contracts . this resulted in lower revenues in 2012 on key programs , including the warfighter information network – tactical ( win-t ) and common hardware systems ( chs ) , and for encryption and ruggedized hardware products . in addition , over 10 percent of the decline in the group 's revenues was due to lower volume on the u.k.-based bowman communications system program , which has been successfully fielded and has now moved into maintenance and long-term support . in the group 's it solutions and services business , decreased volume in 2012 due to the completion of several large-scale it infrastructure and support programs for the intelligence community and the dod , 37 including the new campus east , mark center and walter reed national military medical center programs , was largely offset by revenues from the 2011 acquisition of vangent , inc. revenues were down in 2012 compared with 2011 in the group 's isr business primarily due to lower optical products revenues as demand was impacted negatively by pressured defense budgets and the broader economic environment . actions taken in 2012 to align the business with anticipated future demand are expected to stabilize performance in 2013. operating earnings and margins decreased significantly in 2012 compared with 2011 . this decrease was driven by the negative impact of four discrete charges : $ 2 billion goodwill impairment resulting from a decline in the estimated fair value of the group caused by topline pressure from slowed defense spending and the threat of sequestration , and margin compression due to mix shift impacting the projected cash flows of the group ; $ 110 of intangible asset impairments on several assets in our optical products business , most significantly the contract and program intangible asset , as a result of competitive losses and delays in the fourth quarter of 2012 indicative of lower overall demand caused by the economic downturn ; $ 58 write-down of substantially all of the remaining ruggedized hardware inventory , including $ 25 in the third quarter , based on anticipated remaining demand for products that ceased production in 2012 ; and $ 26 for cost growth associated with the demonstration phase of the sv program ( an additional $ 6 was recorded by the combat systems group 's european military vehicles business ) . for further discussion of the impairment charges , see note b to the consolidated financial statements and the application of critical accounting policies later in this section . review of 2010 vs. 2011 replace_table_token_24_th the information systems and technology group 's revenues were down in 2011 compared with 2010. revenues in the mobile communication systems business were impacted unfavorably by crs and protracted u.s. customer acquisition cycles that slowed orders , resulting in lower revenues on ruggedized hardware products , including chs , and other products with shorter-term delivery timeframes . additionally , revenues on the canadian maritime helicopter project ( mhp ) were down in 2011 as the group transitioned from production to the training and support phase of the program . lower revenues in the group 's isr business resulted from the sale of a satellite facility in 2010 and lower optical products volume . offsetting these decreases were increased revenues in the it solutions and services business due to the 2011 acquisition of vangent , inc. , and higher volume on the group 's large-scale it infrastructure and support programs . operating earnings decreased at a lower rate than revenues , resulting in a 20-basis-point increase in operating margins . higher margins in our mobile communication systems business were in part due to $ 95 of overhead reduction initiatives , but were largely offset by growth in our lower-margin it solutions and services business . 38 2013 outlook we expect 2013 revenues in the information systems and technology group to be down approximately 5 percent from 2012 with operating margins in the low-8 percent range . our 2013 outlook assumes the u.s. government operates under a cr in fy 2013 and there are no significant reductions to the proposed defense budget . due to its shorter-cycle businesses , the information systems and technology outlook is more sensitive than our other defense groups to any additional budget reductions that may occur . corporate corporate results consist primarily of compensation expense for stock options . corporate operating costs totaled $ 83 in 2010 , $ 77 in 2011 and $ 69 in 2012 . we expect 2013 full-year corporate operating costs of approximately $ 90 , an increase from 2012 due to less income from the advanced funding of our primary pension plan . backlog and estimated potential contract value our total backlog , including funded and unfunded portions , was $ 51.3 billion at the end of 2012 compared with $ 57.4 billion at year-end 2011 . our backlog does not include work awarded on unfunded indefinite delivery , indefinite quantity ( idiq

net cash provided by operating activities $ 3,124 $ 2,855 $ 2,986 $ 3,238 $ 2,687 capital expenditures ( 490 ) ( 385 ) ( 370 ) ( 458 ) ( 450 ) free cash flow from operations $ 2,634 $ 2,470 $ 2,616 $ 2,780 $ 2,237 cash flow as a percentage of earnings ( loss ) from continuing operations : net cash provided by operating activities 126 % 119 % 114 % 127 % nm * free cash flow from operations 106 % 103 % 100 % 109 % nm * * not meaningful ( nm ) due to net loss in 2012. return on invested capital . we believe roic is a useful measure for investors because it reflects our ability to generate returns from the capital we have deployed in our operations . we use roic to evaluate investment decisions and as a performance measure in evaluating management . we define roic as net operating profit after taxes divided by the sum of the average debt and shareholders ' equity for the year . net operating profit after taxes is defined as earnings ( loss ) from continuing operations plus after-tax interest and amortization expense .


 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.
     ```net cash provided by operating activities $ 3,124 $ 2,855 $ 2,986 $ 3,238 $ 2,687 capital expenditures ( 490 ) ( 385 ) ( 370 ) ( 458 ) ( 450 ) free cash flow from operations $ 2,634 $ 2,470 $ 2,616 $ 2,780 $ 2,237 cash flow as a percentage of earnings ( loss ) from continuing operations : net cash provided by operating activities 126 % 119 % 114 % 127 % nm * free cash flow from operations 106 % 103 % 100 % 109 % nm * * not meaningful ( nm ) due to net loss in 2012. return on invested capital . we believe roic is a useful measure for investors because it reflects our ability to generate returns from the capital we have deployed in our operations . we use roic to evaluate investment decisions and as a performance measure in evaluating management . we define roic as net operating profit after taxes divided by the sum of the average debt and shareholders ' equity for the year . net operating profit after taxes is defined as earnings ( loss ) from continuing operations plus after-tax interest and amortization expense .
```    
 Suspicious Activity Report : defense business is buoyed by the relevance of our programs to the military 's funding priorities , the diversity of our programs and customers within the budget , our insight into customer requirements stemming from our incumbency on core programs , our ability to evolve our products to address a fast-changing threat environment and our proven track record of successful contract execution . we continue to pursue opportunities presented by international demand for military equipment and information technologies from our indigenous international operations and through exports from our u.s. businesses . while the revenue potential can be significant , international defense budgets , much like u.s. budgets , are subject to unpredictable issues of contract award timing , changing priorities and overall spending pressures . as a result of the demonstrated success of our products and services , we would expect our international sales and exports to grow subject to overall economic conditions . in our aerospace group , business-jet market conditions were steady in 2012. the group benefited from robust flying hours across the installed base of gulfstream aircraft , improved large-cabin order interest from north american corporate customers and lower customer contract defaults . we expect our continued investment in new aircraft products to support aerospace 's long-term growth , as evidenced by the group 's newest aircraft offerings , the g280 and the g650 . similarly , we believe that aircraft-service revenues provide the group diversified exposure to aftermarket sales fueled by continued growth in the global installed business-jet fleet . results of operations introduction an understanding of our accounting practices is important to an evaluation of our operating results . we recognize the majority of our revenues using the percentage-of-completion method of accounting . the following paragraphs explain how this method is applied in recognizing revenues and operating costs in our aerospace and defense business groups . in the aerospace group , contracts for new aircraft have two major phases : the manufacture of the “ green ” aircraft and the aircraft 's outfitting , which includes exterior painting and installation of customer-selected interiors . we record revenues on these contracts at the completion of these two phases : when green aircraft are delivered to and accepted by the customer , and when the customer accepts final delivery of the outfitted aircraft . revenues in the aerospace group 's other original equipment manufacturers ( oems ) completions and services businesses are recognized as work progresses or upon delivery of services . changes in revenues result from the number and mix of new aircraft deliveries ( green and outfitted ) , progress on aircraft completions and the level of aircraft service activity during the period . the majority of the aerospace group 's operating costs relates to new aircraft production for firm orders and consists of labor , material and overhead costs . the costs are accumulated in production lots and recognized as operating costs at green aircraft delivery based on the estimated average unit cost in a production lot . while changes in the estimated average unit cost for a production lot impact the level of operating costs , the amount of operating costs reported in a given period is based largely on the number and type of aircraft delivered . operating costs in the aerospace group 's completions and services businesses are generally recognized as incurred . 27 for new aircraft , operating earnings and margins are a function of the prices of our aircraft , our operational efficiency in manufacturing and outfitting the aircraft and the mix of aircraft deliveries between the higher-margin large-cabin and lower-margin mid-cabin aircraft . additional factors affecting the group 's earnings and margins include the volume , mix and profitability of completions and services work performed , the market for pre-owned aircraft and the level of general and administrative ( g & a ) and net research and development ( r & d ) costs incurred by the group . in the defense groups , revenue on long-term government contracts is recognized as work progresses , either as products are produced or services are rendered . as a result , changes in revenues are discussed generally in terms of volume , typically measured by the level of activity on individual contracts or programs . year-over-year variances attributed to volume are due to changes in production or service levels and delivery schedules . operating costs for the defense groups consist of labor , material , subcontractor and overhead costs and are generally recognized as incurred . variances in costs recognized from period to period primarily reflect increases and decreases in production or activity levels on individual contracts and , therefore , result largely from the same factors that drive variances in revenues . operating earnings and margins in the defense groups are driven by changes in volume , performance or contract mix . performance refers to changes in profitability based on revisions to estimates at completion on individual contracts . these revisions may result from increases or decreases to the estimated value of the contract , the estimated costs to complete or both . therefore , changes in costs incurred in the period do not necessarily impact profitability . it is only when total estimated costs at completion change that profitability may be impacted . contract mix refers to changes in the volume of higher- vs. lower-margin work . higher or lower margins can be inherent in the contract type ( e.g . , fixed-price/cost-reimbursable ) or type of work ( e.g . , development/production ) . 28 consolidated overview replace_table_token_9_th review of 2011 vs. 2012 replace_table_token_10_th our revenues decreased in 2012 compared with 2011. revenues decreased in the information systems and technology 's mobile communication systems business and on several international wheeled vehicle contracts in the combat systems group . these decreases were partially offset by higher revenues in the aerospace group due to increased deliveries of g650 aircraft . story_separator_special_tag 2013 outlook we expect the marine systems group 's 2013 revenues to increase approximately 2 percent from 2012 . with the completion of the t-ake program , operating margins are expected to decline to the low- to mid- 9 percent range in 2013 . our 2013 outlook assumes the u.s. government operates under a cr in fy 2013 and there are no significant reductions to the proposed defense budget . information systems and technology review of 2011 vs. 2012 replace_table_token_23_th operating results the information systems and technology group 's revenues decreased in 2012 compared with 2011 . the decrease consisted of the following : mobile communication systems $ ( 1,086 ) information technology ( it ) solutions and mission support services ( 56 ) intelligence , surveillance and reconnaissance ( isr ) systems ( 62 ) total decrease $ ( 1,204 ) the decrease in revenues in the mobile communication systems business was driven by slowed defense spending , protracted u.s. customer acquisition cycles and a slower than expected transition to follow-on work on several contracts . this resulted in lower revenues in 2012 on key programs , including the warfighter information network – tactical ( win-t ) and common hardware systems ( chs ) , and for encryption and ruggedized hardware products . in addition , over 10 percent of the decline in the group 's revenues was due to lower volume on the u.k.-based bowman communications system program , which has been successfully fielded and has now moved into maintenance and long-term support . in the group 's it solutions and services business , decreased volume in 2012 due to the completion of several large-scale it infrastructure and support programs for the intelligence community and the dod , 37 including the new campus east , mark center and walter reed national military medical center programs , was largely offset by revenues from the 2011 acquisition of vangent , inc. revenues were down in 2012 compared with 2011 in the group 's isr business primarily due to lower optical products revenues as demand was impacted negatively by pressured defense budgets and the broader economic environment . actions taken in 2012 to align the business with anticipated future demand are expected to stabilize performance in 2013. operating earnings and margins decreased significantly in 2012 compared with 2011 . this decrease was driven by the negative impact of four discrete charges : $ 2 billion goodwill impairment resulting from a decline in the estimated fair value of the group caused by topline pressure from slowed defense spending and the threat of sequestration , and margin compression due to mix shift impacting the projected cash flows of the group ; $ 110 of intangible asset impairments on several assets in our optical products business , most significantly the contract and program intangible asset , as a result of competitive losses and delays in the fourth quarter of 2012 indicative of lower overall demand caused by the economic downturn ; $ 58 write-down of substantially all of the remaining ruggedized hardware inventory , including $ 25 in the third quarter , based on anticipated remaining demand for products that ceased production in 2012 ; and $ 26 for cost growth associated with the demonstration phase of the sv program ( an additional $ 6 was recorded by the combat systems group 's european military vehicles business ) . for further discussion of the impairment charges , see note b to the consolidated financial statements and the application of critical accounting policies later in this section . review of 2010 vs. 2011 replace_table_token_24_th the information systems and technology group 's revenues were down in 2011 compared with 2010. revenues in the mobile communication systems business were impacted unfavorably by crs and protracted u.s. customer acquisition cycles that slowed orders , resulting in lower revenues on ruggedized hardware products , including chs , and other products with shorter-term delivery timeframes . additionally , revenues on the canadian maritime helicopter project ( mhp ) were down in 2011 as the group transitioned from production to the training and support phase of the program . lower revenues in the group 's isr business resulted from the sale of a satellite facility in 2010 and lower optical products volume . offsetting these decreases were increased revenues in the it solutions and services business due to the 2011 acquisition of vangent , inc. , and higher volume on the group 's large-scale it infrastructure and support programs . operating earnings decreased at a lower rate than revenues , resulting in a 20-basis-point increase in operating margins . higher margins in our mobile communication systems business were in part due to $ 95 of overhead reduction initiatives , but were largely offset by growth in our lower-margin it solutions and services business . 38 2013 outlook we expect 2013 revenues in the information systems and technology group to be down approximately 5 percent from 2012 with operating margins in the low-8 percent range . our 2013 outlook assumes the u.s. government operates under a cr in fy 2013 and there are no significant reductions to the proposed defense budget . due to its shorter-cycle businesses , the information systems and technology outlook is more sensitive than our other defense groups to any additional budget reductions that may occur . corporate corporate results consist primarily of compensation expense for stock options . corporate operating costs totaled $ 83 in 2010 , $ 77 in 2011 and $ 69 in 2012 . we expect 2013 full-year corporate operating costs of approximately $ 90 , an increase from 2012 due to less income from the advanced funding of our primary pension plan . backlog and estimated potential contract value our total backlog , including funded and unfunded portions , was $ 51.3 billion at the end of 2012 compared with $ 57.4 billion at year-end 2011 . our backlog does not include work awarded on unfunded indefinite delivery , indefinite quantity ( idiq

