Initial contracts for two competing designs were awarded to Lockheed Martin and McDonnell Douglas in 1996, and the missile designations AGM-158A and AGM-159A were allocated to the two weapons.
1996年， 洛克希德·马丁公司和麦克唐纳·道格拉斯 公司签订了两项竞争性设计的初始合同，并将导弹名称AGM-158A和AGM-159A分配给这两种武器。