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## Notes to Consolidated Financial Statements (Continued) 33333333333333333333333333333333333333333333 

Free cash flow, defined as operating cash flow less capital expenditures and capitalized expenditures for internal use soft- ware, is used by the Company to evaluate cash flow performance by the segments. Corporate free cash flow includes the differ- ence between amounts charged to the segments for interest and taxes on an intercompany basis and the amounts actually paid by the Company. 

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The country of destination was used to attribute sales to either United States or Outside United States. Sales to major customers in 2003, 2002, and 2001 were: U.S. government, including foreign military sales, $13,436 million, $12,255 million, and $11,161 million, respectively, and U.S. Department of Defense, $11,766 million, $10,406 million, and $9,512 million, respectively. 

