A bombardier or bomb aimer is the crew member of a bomber aircraft responsible for the targeting of aerial bombs. "Bomb aimer" was the preferred term in the military forces of the Commonwealth, while "bombardier" (from the French word for "bomb thrower" and similar in meaning to "grenadier") was the equivalent position in the United States Armed Forces. The aircraft of the United Kingdom's V bomber force carried two navigators, one of whom acted as bomb aimer, although having the official title of "navigator radar".