RAYTHEON COMPANY 333 Notes to Consolidated Financial Statements (Continued) 33333333333333333333333333333333333333333333 The Company also makes an annual contribution to the Company stock fund of approximately one-half of one percent of salaries and wages, subject to certain limitations, of most U.S. salaried and hourly employees (Company Contributions). Total expense for the Company Contributions was $25 million, $26 mil- lion, and $28 million and the number of shares allocated to partici- pant accounts was 884,000; 640,000; and 941,000 in 2003, 2002, and 2001, respectively.  The Company funded a portion of the Company Match and Company Contributions in 2003, 2002, and 2001 through the issuance of common stock. At December 31, 2003, there was a total of $7.6 billion invested in the Company’s defined contribution plan. At December 31, 2003, there was a total of $1.4 billion invested in the Company stock fund consisting of $519 million of Company Match which must remain invested in the Company stock fund for five years from the year in which the contribution was made or the year in which the employee reaches age 55, whichever is earlier; $202 million of Company Contributions which must remain invested in the Company stock fund until the employee reaches age 55 and completes 10 years of service; and $711 million over which there are no restrictions. Integrated Defense Systems (IDS) provides mission systems integration for the air, surface, and subsurface battlespace. Intelligence and Information Systems (IIS) provides signal and image processing, geospatial intelligence, airborne and space- borne command and control, ground engineering support, and weather and environmental management.  Missile Systems (MS) provides air-to-air, precision strike, sur- face Navy air defense, and land combat missiles, guided projec- tiles, kinetic kill vehicles, and directed energy weapons. Network Centric Systems (NCS) provides network centric solu- tions to integrate sensors, communications, and command and control to manage the battlespace. Space and Airborne Systems (SAS) provides electro- optical/infrared sensors, airborne radars, solid state high energy lasers, precision guidance systems, electronic warfare systems, and space-qualified systems for civil and military applications. Technical Services (TS) provides technical, scientific, and pro- fessional services for defense, federal, and commercial cus- tomers worldwide. Raytheon Aircraft Company (RAC) designs, manufactures, mar- kets, and supports business jets, turboprops, and piston-powered aircraft for the world’s commercial, fractional ownership, and military aircraft markets. In 2003, the Company changed the way pension expense or income is reported in the Company’s segment results. Statement of Financial Accounting Standards (SFAS) No. 87, Employers’ Accounting for Pensions, outlines the methodology used to determine pension expense or income for financial reporting pur- poses, which is not necessarily indicative of the funding require- ments of pension plans which are determined by other factors. A major factor for determining pension funding requirements are Cost Accounting Standards (CAS) that proscribe the allocation to and recovery of pension costs on U.S. government contracts. The Company now reports the difference between SFAS No. 87 (FAS) pension expense or income and CAS pension expense as a separate line item in the Company’s segment results called FAS/CAS Pension Adjustment. The results for each segment now only include pension expense as determined under CAS, Reportable segments have been determined based upon product lines and include the following: Integrated Defense Systems, Intelligence and Information Systems, Missile Systems, Network Centric Systems, Space and Airborne Systems, Technical Services, Aircraft, and Other. In 2003, the Company began reporting its defense businesses in six segments. In addition, the Company’s Commercial Electronics businesses were reassigned to the new defense businesses. Also, the Company created an Other seg- ment comprised of Flight Options LLC (FO), Raytheon Airline Aviation Services LLC (RAAS), and Raytheon Professional Services LLC (RPS). FO offers services in the aircraft fractional ownership industry. RAAS manages the Company’s commuter air- craft business and Starship aircraft portfolio. RPS works with cus- tomers to design and execute learning solutions.  333 NOTE P: BUSINESS SEGMENT REPORTING