The F-35 Lightning II is a 5th generation stealth fighter jet that comes in three variants - the F-35A conventional takeoff and landing variant, the F-35B short takeoff/vertical landing variant, and the F-35C carrier variant. It integrates stealth, advanced sensors and networking capabilities. Sustainment is a focus, with autonomic logistics, a global supplier network, and performance-based logistics aimed at reducing lifetime costs. The F-35 is intended to be the mainstay fighter for air forces around the world well into the 21st century.