Developed in the 1980's and successfully tested during the Gulf War, the Stealth Bomber marked the second entrance of stealth technology in the U.S. Air Force. The B-2 Spirit bomber combined composite materials and coating to cloak it from radar. The B-2 had intercontinental range and carried both nuclear and conventional armament. The stealth, range and armament made the B-2 a deadly weapon, but each cost $1.3 billion to produce.