Boeing is a major aerospace and defense firm. It operates in four segments: commercial airplanes; defense, space, and security; Global services; and Boeing capital. Boeing's commercial airplanes segment competes with Airbus in the production of aircraft ranging from 130 seats upward. Boeing's defense, space, and security segment competes with Lockheed, Northrop, and several other firms to create military aircraft and weaponry. Global services provides aftermarket support to airlines.
