Note 5   Information on Business Segments We operate in four principal business segments: Aeronautics, Electronic Systems, IS&amp;GS, and Space Systems. We organize our business segments based on the nature of the products and services offered. The following is a brief description of the activities of the principal business segments: " Aeronautics   Engaged in the research, design, development, manufacture, integration, sustainment, support, and upgrade of advanced military aircraft, including combat and air mobility aircraft, unmanned air vehicles, and related technologies. Major products and programs include design, development, production and sustainment of the F-35 international multi-role, stealth fighter; the F-22 air dominance and multi-mission stealth fighter; the F-16 international multi-role fighter; the C-130J tactical transport aircraft; the C-5M strategic airlifter modernization program; and support for the P-3 maritime patrol aircraft and the U-2 high-altitude reconnaissance aircraft. Our Advanced Development Programs organization, which includes the Skunk Works, provides next generation innovative system solutions using rapid prototype applications and advanced technologies. " Electronic Systems   Manages complex programs and designs, develops, produces, and integrates hardware and software solutions to ensure the mission readiness of armed forces and government agencies worldwide. Global security solutions include advanced sensors, decision systems, and weapons for air-, land-, and sea-based platforms. The segment integrates land vehicles, ships, and fixed- and rotary-wing aircraft. Major products and programs include air and missile defense; tactical missiles; weapon fire control systems; surface ship and submarine combat systems; anti-submarine and undersea warfare systems; land, sea-based, and airborne radars; surveillance and reconnaissance systems; simulation and training systems; and integrated logistics and sustainment services. Electronic Systems also manages and operates the Sandia Nation