B-2 Spirit

The B-2 Spirit, sometimes known as the B-2 Bomber, is an American multi-role stealth bomber capable of delivering both conventional and nuclear weapons. A dramatic leap forward in technology, the bomber represented a major milestone in the U.S. bomber modernization program. The B-2 is the most expensive plane built to date, costing approximately $2.2 billion USD per plane. http://www.fas.org/man/gao/gao94217.htm Some writers have suggested that the huge program cost may actually include costs for other black projects that remain classified. The high per-unit cost may also be partially explained by the small number of planes produced coupled with a large research overhead in the B-2 program (see below).

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