United States Air Force - B2 - Spirit - Stealth Bomber - MugB 2, also called Spirit, U. S. long range stealth bomber that first flew in 1989 and was delivered to the U. S. Air Force starting in 1993. Built and maintained by Northrop Grumman Corporation, the B 2 is a flying wing, a configuration consisting essentially of a short but very broad wing with no fuselage and tail. This design gives the B 2 a length (69 feet, or 21 metres) only slightly greater than that of a fighter yet gives it a wingspan (172 feet,