north american sales for the year ended december 31 , 2011 included $ 60.4 million of general monitors sales compared to $ 12.1 million in the year ended december 31 , 2010. during the year ended december 31 , 2011 , we saw growing demand in oil and gas and other core industrial markets , resulting in higher shipments of instruments ( excluding general monitors ) , head protection and fall protection , up $ 11.8 million , $ 6.0 million and $ 5.2 million , respectively . sales of the advanced combat helmet ( ach ) were $ 27.2 million higher in the current year , as we continued to ship on the current contract . net sales of our european segment were $ 286.8 million for the year ended december 31 , 2011 , an increase of $ 35.7 million , or 14 % , from $ 251.1 million for the year ended december 31 , 2010. net sales in the european segment included $ 25.8 million of general monitor sales for the year ended december 31 , 2011 , compared to $ 4.2 million in the year ended december 31 , 2010. excluding general monitors , local currency sales in europe decreased $ 1.0 million for the year ended december 31 , 2011. the decrease occurred primarily in western europe where local currency sales were down $ 8.6 million reflecting lower shipments of gas masks , fire helmets and ballistic helmets , partially offset by higher shipments of scbas and instruments . lower local currency sales in western europe were partially offset by a $ 7.6 million increase in sales in eastern europe and the middle east due to higher shipments of scbas , instruments and ballistic helmets to the fire service , industrial and military markets . favorable translation effects of stronger european currencies , particularly the euro , increased current year european segment sales , when stated in u.s. dollars , by approximately $ 15.1 million . net sales of our international segment were $ 325.3 million for the year ended december 31 , 2011 , an increase of $ 63.8 million , or 24 % , compared to $ 261.5 million for the year ended december 31 , 2010. local currency sales in the international segment increased $ 49.1 million during the year ended december 31 , 2011. the increase in sales was due to strong demand in the mining , fire service and core industrial markets . the sales increase was most notably related to increased shipments of scba 's , head eye and face protection and gas detection products , which increased by $ 9.3 million , $ 13.4 million and $ 8.9 million , respectively . sales growth was fueled mainly by market growth in latin america and china . currency translation effects increased international segment sales , when stated in u.s. dollars , by $ 14.7 million , reflecting a strengthening of the australian dollar , south african rand and brazilian real . cost of products sold . cost of products sold was $ 703.0 million for the year ended december 31 , 2011 , an increase of $ 96.5 million , or 16 % , from $ 606.5 million for the year ended december 31 , 2010. the increase was driven by higher sales . cost of products sold as a percentage of sales was 59.9 % in the year ended december 31 , 2011 compared to 62.1 % in 2010. lower cost of products sold as a percentage of sales in the current year was due to control over manufacturing cost and the addition of general monitors . cost of products sold and operating expenses include net periodic pension benefit costs and credits . pension credits , combined with pension costs , resulted in net pension credits for the year ended december 31 , 2011 of $ 5.0 million , of which credits of $ 4.0 million , $ 0.2 million and $ 0.8 million were included in cost 23 of products sold , selling , general and administrative expenses and research and development expenses , respectively . pension credits , combined with pension costs , resulted in net pension credits for the year ended december 31 , 2010 of $ 7.3 million , of which credits of $ 5.3 million , $ 1.0 million and $ 1.0 million were included in cost of products sold , selling , general and administrative expenses and research and development expenses , respectively . future net pension credits can be volatile depending on the future performance of plan assets , changes in actuarial assumptions regarding such factors as the selection of discount rates and rates of return on plan assets , changes in the amortization levels of actuarial gains and losses , plan amendments affecting benefit pay-out levels , and profile changes in the participant populations being valued . changes in any of these factors could cause net pension credits to change . to the extent net pension credits decline in the future , our net income would be adversely affected . gross profit . gross profit for the year ended december 31 , 2011 was $ 470.2 million , an increase of $ 100.1 million , or 27 % , from $ 370.1 million for the year ended december 31 , 2010. the ratio of gross profit to sales was 40.1 % in 2011 compared to 37.9 % in 2010. the higher gross profit ratio in 2011 was primarily related to improved pricing , control over manufacturing costs , and the addition of general monitors . selling , general and administrative expenses . story_separator_special_tag 27 international segment net income for the year ended december 31 , 2010 was $ 15.8 million , an increase of $ 9.1 million , or 136 % , from $ 6.7 million for the year ended december 31 , 2009. higher net income was primarily related to improved sales and gross profits , partially offset by higher selling expenses . reconciling items for the year ended december 31 , 2010 reported a net loss of $ 16.9 million , an increase of $ 5.2 million , or 44 % , compared to a net loss of $ 11.7 million for the year ended december 31 , 2009. the higher loss in 2010 was primarily due to expenses related to the acquisition of general monitors and incremental interest expense . story_separator_special_tag expect to generate sufficient operating cash flow to make payments against this amount each year . to the extent that a balance remains when the facility matures in 2016 , we expect to refinance the remaining balance through new borrowing facilities . we expect to make net contributions of $ 4.1 million to our pension plans in 2012 . 29 we have purchase commitments for materials , supplies , services and property , plant and equipment as part of our ordinary conduct of business . we categorize the product liability losses that we experience into two main categories , single incident and cumulative trauma . single incident product liability claims are discrete incidents that are typically known to us when they occur and involve observable injuries and , therefore , more quantifiable damages . therefore , we maintain a reserve for single incident product liability claims based on expected settlement costs for pending claims and an estimate of costs for unreported claims derived from experience , sales volumes and other relevant information . our reserve for single incident product liability claims was $ 4.7 million and $ 5.2 million at december 31 , 2011 and 2010 , respectively . single incident product liability expense during the years ended december 31 , 2011 , 2010 and 2009 was $ 1.5 million , $ 0.2 million and $ 0.5 million , respectively . we evaluate our single incident product liability exposures on an ongoing basis and make adjustments to the reserve as new information becomes available . cumulative trauma product liability claims involve exposures to harmful substances ( e.g . , silica , asbestos and coal dust ) that occurred many years ago and may have developed over long periods of time into diseases such as silicosis , asbestosis or coal worker 's pneumoconiosis . we are presently named as a defendant in 2,321 lawsuits in which plaintiffs allege to have contracted certain cumulative trauma diseases related to exposure to silica , asbestos , and or coal dust . these lawsuits mainly involve respiratory protection products allegedly manufactured and sold by us . we are unable to estimate total damages sought in these lawsuits as they generally do not specify the injuries alleged or the amount of damages sought , and potentially involve multiple defendants . cumulative trauma product liability litigation is difficult to predict . in our experience , until late in a lawsuit , we can not reasonably determine whether it is probable that any given cumulative trauma lawsuit will ultimately result in a liability . this uncertainty is caused by many factors , including the following : cumulative trauma complaints generally do not provide information sufficient to determine if a loss is probable ; cumulative trauma litigation is inherently unpredictable and information is often insufficient to determine if a lawsuit will develop into an actively litigated case ; and even when a case is actively litigated , it is often difficult to determine if the lawsuit will be dismissed or otherwise resolved until late in the lawsuit . moreover , even once it is probable that such a lawsuit will result in a loss , it is difficult to reasonably estimate the amount of actual loss that will be incurred . these amounts are highly variable and turn on a case-by-case analysis of the relevant facts , which are often not learned until late in the lawsuit . because of these factors , we can not reliably determine our potential liability for such claims until late in the lawsuit . we , therefore , do not record cumulative trauma product liability losses when a lawsuit is filed , but rather , when we learn sufficient information to determine that it is probable that we will incur a loss and the amount of loss can be reasonably estimated . we record expenses for defense costs associated with open cumulative trauma product liability lawsuits as incurred . we can not estimate any amount or range of possible losses related to resolving pending and future cumulative trauma product liability claims that we may face because of the factors described above . as new information about cumulative trauma product liability cases and future developments becomes available , we reassess our potential exposures . a summary of cumulative trauma product liability claims activity follows : replace_table_token_10_th 30 with some common contract exclusions , we maintain insurance for cumulative trauma product liability claims . we have purchased insurance policies from over 20 different insurance carriers that provide coverage for cumulative trauma product liability losses and related defense costs . in the normal course of business , we make payments to settle product liability claims and for related defense costs . we record receivables for the amounts that are covered by insurance . the available limits of these policies are many times our recorded insurance receivable balance . various factors could affect the timing and amount of recovery of our insurance receivables , including the outcome of negotiations with insurers , legal proceedings with respect to product liability insurance coverage and the extent to which insurers may become insolvent in the future . our insurance receivables at december 31 , 2011 and 2010 totaled $

liquidity and capital resources our main source of liquidity is operating cash flows , supplemented by borrowings to fund working capital requirements and significant transactions . our principal liquidity requirements are for working capital , capital expenditures , principal and interest payments on debt and acquisitions . approximately half of our long-term debt is at fixed interest rates with manageable repayment schedules through 2021. the remainder of our long-term debt is at variable rates on an unsecured revolving credit facility that is due in 2016. substantially all of our borrowings originate in the u.s. , which has limited our exposure to non-u.s. credit markets and to currency exchange rate fluctuations . in november 2011 , we amended the unsecured senior revolving credit facility that we entered into in 2010 to increase the facility from $ 250.0 million to $ 300.0 million and extend the term of the facility until november 2016. the amended credit agreement provides for borrowings up to $ 300.0 million and is subject to certain commitment fees . loans made under the senior revolving credit facility bear interest at a variable rate . loan proceeds may be used for general corporate purposes , including working capital , permitted acquisitions , capital expenditures and repayment of existing indebtedness . the credit agreement also provides for an uncommitted incremental facility that permits us , subject to certain conditions , to request an increase in the senior credit facility of up to $ 50.0 million . at december 31 , 2011 , $ 130.0 million of the $ 300.0 million senior revolving credit facility was unused . during 2010 , we issued $ 100.0 million in unsecured 4.00 % series a senior notes . these notes mature in october 2021 and are payable in five annual installments of $ 20.0 million , commencing in october 2017. interest is payable quarterly . incremental borrowing in 2010 and 2011 was primarily related to our acquisition of general monitors in october 2010. during 2011 , we reduced borrowings on the senior revolving credit facility by $ 25.0 million .


 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.
     ```liquidity and capital resources our main source of liquidity is operating cash flows , supplemented by borrowings to fund working capital requirements and significant transactions . our principal liquidity requirements are for working capital , capital expenditures , principal and interest payments on debt and acquisitions . approximately half of our long-term debt is at fixed interest rates with manageable repayment schedules through 2021. the remainder of our long-term debt is at variable rates on an unsecured revolving credit facility that is due in 2016. substantially all of our borrowings originate in the u.s. , which has limited our exposure to non-u.s. credit markets and to currency exchange rate fluctuations . in november 2011 , we amended the unsecured senior revolving credit facility that we entered into in 2010 to increase the facility from $ 250.0 million to $ 300.0 million and extend the term of the facility until november 2016. the amended credit agreement provides for borrowings up to $ 300.0 million and is subject to certain commitment fees . loans made under the senior revolving credit facility bear interest at a variable rate . loan proceeds may be used for general corporate purposes , including working capital , permitted acquisitions , capital expenditures and repayment of existing indebtedness . the credit agreement also provides for an uncommitted incremental facility that permits us , subject to certain conditions , to request an increase in the senior credit facility of up to $ 50.0 million . at december 31 , 2011 , $ 130.0 million of the $ 300.0 million senior revolving credit facility was unused . during 2010 , we issued $ 100.0 million in unsecured 4.00 % series a senior notes . these notes mature in october 2021 and are payable in five annual installments of $ 20.0 million , commencing in october 2017. interest is payable quarterly . incremental borrowing in 2010 and 2011 was primarily related to our acquisition of general monitors in october 2010. during 2011 , we reduced borrowings on the senior revolving credit facility by $ 25.0 million .
```    
 Suspicious Activity Report : north american sales for the year ended december 31 , 2011 included $ 60.4 million of general monitors sales compared to $ 12.1 million in the year ended december 31 , 2010. during the year ended december 31 , 2011 , we saw growing demand in oil and gas and other core industrial markets , resulting in higher shipments of instruments ( excluding general monitors ) , head protection and fall protection , up $ 11.8 million , $ 6.0 million and $ 5.2 million , respectively . sales of the advanced combat helmet ( ach ) were $ 27.2 million higher in the current year , as we continued to ship on the current contract . net sales of our european segment were $ 286.8 million for the year ended december 31 , 2011 , an increase of $ 35.7 million , or 14 % , from $ 251.1 million for the year ended december 31 , 2010. net sales in the european segment included $ 25.8 million of general monitor sales for the year ended december 31 , 2011 , compared to $ 4.2 million in the year ended december 31 , 2010. excluding general monitors , local currency sales in europe decreased $ 1.0 million for the year ended december 31 , 2011. the decrease occurred primarily in western europe where local currency sales were down $ 8.6 million reflecting lower shipments of gas masks , fire helmets and ballistic helmets , partially offset by higher shipments of scbas and instruments . lower local currency sales in western europe were partially offset by a $ 7.6 million increase in sales in eastern europe and the middle east due to higher shipments of scbas , instruments and ballistic helmets to the fire service , industrial and military markets . favorable translation effects of stronger european currencies , particularly the euro , increased current year european segment sales , when stated in u.s. dollars , by approximately $ 15.1 million . net sales of our international segment were $ 325.3 million for the year ended december 31 , 2011 , an increase of $ 63.8 million , or 24 % , compared to $ 261.5 million for the year ended december 31 , 2010. local currency sales in the international segment increased $ 49.1 million during the year ended december 31 , 2011. the increase in sales was due to strong demand in the mining , fire service and core industrial markets . the sales increase was most notably related to increased shipments of scba 's , head eye and face protection and gas detection products , which increased by $ 9.3 million , $ 13.4 million and $ 8.9 million , respectively . sales growth was fueled mainly by market growth in latin america and china . currency translation effects increased international segment sales , when stated in u.s. dollars , by $ 14.7 million , reflecting a strengthening of the australian dollar , south african rand and brazilian real . cost of products sold . cost of products sold was $ 703.0 million for the year ended december 31 , 2011 , an increase of $ 96.5 million , or 16 % , from $ 606.5 million for the year ended december 31 , 2010. the increase was driven by higher sales . cost of products sold as a percentage of sales was 59.9 % in the year ended december 31 , 2011 compared to 62.1 % in 2010. lower cost of products sold as a percentage of sales in the current year was due to control over manufacturing cost and the addition of general monitors . cost of products sold and operating expenses include net periodic pension benefit costs and credits . pension credits , combined with pension costs , resulted in net pension credits for the year ended december 31 , 2011 of $ 5.0 million , of which credits of $ 4.0 million , $ 0.2 million and $ 0.8 million were included in cost 23 of products sold , selling , general and administrative expenses and research and development expenses , respectively . pension credits , combined with pension costs , resulted in net pension credits for the year ended december 31 , 2010 of $ 7.3 million , of which credits of $ 5.3 million , $ 1.0 million and $ 1.0 million were included in cost of products sold , selling , general and administrative expenses and research and development expenses , respectively . future net pension credits can be volatile depending on the future performance of plan assets , changes in actuarial assumptions regarding such factors as the selection of discount rates and rates of return on plan assets , changes in the amortization levels of actuarial gains and losses , plan amendments affecting benefit pay-out levels , and profile changes in the participant populations being valued . changes in any of these factors could cause net pension credits to change . to the extent net pension credits decline in the future , our net income would be adversely affected . gross profit . gross profit for the year ended december 31 , 2011 was $ 470.2 million , an increase of $ 100.1 million , or 27 % , from $ 370.1 million for the year ended december 31 , 2010. the ratio of gross profit to sales was 40.1 % in 2011 compared to 37.9 % in 2010. the higher gross profit ratio in 2011 was primarily related to improved pricing , control over manufacturing costs , and the addition of general monitors . selling , general and administrative expenses . story_separator_special_tag 27 international segment net income for the year ended december 31 , 2010 was $ 15.8 million , an increase of $ 9.1 million , or 136 % , from $ 6.7 million for the year ended december 31 , 2009. higher net income was primarily related to improved sales and gross profits , partially offset by higher selling expenses . reconciling items for the year ended december 31 , 2010 reported a net loss of $ 16.9 million , an increase of $ 5.2 million , or 44 % , compared to a net loss of $ 11.7 million for the year ended december 31 , 2009. the higher loss in 2010 was primarily due to expenses related to the acquisition of general monitors and incremental interest expense . story_separator_special_tag expect to generate sufficient operating cash flow to make payments against this amount each year . to the extent that a balance remains when the facility matures in 2016 , we expect to refinance the remaining balance through new borrowing facilities . we expect to make net contributions of $ 4.1 million to our pension plans in 2012 . 29 we have purchase commitments for materials , supplies , services and property , plant and equipment as part of our ordinary conduct of business . we categorize the product liability losses that we experience into two main categories , single incident and cumulative trauma . single incident product liability claims are discrete incidents that are typically known to us when they occur and involve observable injuries and , therefore , more quantifiable damages . therefore , we maintain a reserve for single incident product liability claims based on expected settlement costs for pending claims and an estimate of costs for unreported claims derived from experience , sales volumes and other relevant information . our reserve for single incident product liability claims was $ 4.7 million and $ 5.2 million at december 31 , 2011 and 2010 , respectively . single incident product liability expense during the years ended december 31 , 2011 , 2010 and 2009 was $ 1.5 million , $ 0.2 million and $ 0.5 million , respectively . we evaluate our single incident product liability exposures on an ongoing basis and make adjustments to the reserve as new information becomes available . cumulative trauma product liability claims involve exposures to harmful substances ( e.g . , silica , asbestos and coal dust ) that occurred many years ago and may have developed over long periods of time into diseases such as silicosis , asbestosis or coal worker 's pneumoconiosis . we are presently named as a defendant in 2,321 lawsuits in which plaintiffs allege to have contracted certain cumulative trauma diseases related to exposure to silica , asbestos , and or coal dust . these lawsuits mainly involve respiratory protection products allegedly manufactured and sold by us . we are unable to estimate total damages sought in these lawsuits as they generally do not specify the injuries alleged or the amount of damages sought , and potentially involve multiple defendants . cumulative trauma product liability litigation is difficult to predict . in our experience , until late in a lawsuit , we can not reasonably determine whether it is probable that any given cumulative trauma lawsuit will ultimately result in a liability . this uncertainty is caused by many factors , including the following : cumulative trauma complaints generally do not provide information sufficient to determine if a loss is probable ; cumulative trauma litigation is inherently unpredictable and information is often insufficient to determine if a lawsuit will develop into an actively litigated case ; and even when a case is actively litigated , it is often difficult to determine if the lawsuit will be dismissed or otherwise resolved until late in the lawsuit . moreover , even once it is probable that such a lawsuit will result in a loss , it is difficult to reasonably estimate the amount of actual loss that will be incurred . these amounts are highly variable and turn on a case-by-case analysis of the relevant facts , which are often not learned until late in the lawsuit . because of these factors , we can not reliably determine our potential liability for such claims until late in the lawsuit . we , therefore , do not record cumulative trauma product liability losses when a lawsuit is filed , but rather , when we learn sufficient information to determine that it is probable that we will incur a loss and the amount of loss can be reasonably estimated . we record expenses for defense costs associated with open cumulative trauma product liability lawsuits as incurred . we can not estimate any amount or range of possible losses related to resolving pending and future cumulative trauma product liability claims that we may face because of the factors described above . as new information about cumulative trauma product liability cases and future developments becomes available , we reassess our potential exposures . a summary of cumulative trauma product liability claims activity follows : replace_table_token_10_th 30 with some common contract exclusions , we maintain insurance for cumulative trauma product liability claims . we have purchased insurance policies from over 20 different insurance carriers that provide coverage for cumulative trauma product liability losses and related defense costs . in the normal course of business , we make payments to settle product liability claims and for related defense costs . we record receivables for the amounts that are covered by insurance . the available limits of these policies are many times our recorded insurance receivable balance . various factors could affect the timing and amount of recovery of our insurance receivables , including the outcome of negotiations with insurers , legal proceedings with respect to product liability insurance coverage and the extent to which insurers may become insolvent in the future . our insurance receivables at december 31 , 2011 and 2010 totaled $

