The program went through a protracted development stage but was never adopted by the United States Navy, due to the ending of the Cold War and the reduction in threat of its perceived primary target, Soviet supersonic bombers.
Program ini melalui tahap pengembangan berlarut-larut tetapi tidak pernah diadopsi oleh Angkatan Laut Amerika Serikat, karena berakhirnya perang dingin dan pengurangan ancaman target utama pembom supersonik Uni Soviet.