It was conceived in March 1962 when the U.S. Navy issued two requirements for long-range Anti-Radiation Missiles (ARMs) to complement the short-range AGM-45 Shrike.
Ia disusun Maret 1962 ketika Angkatan Laut AS mengeluarkan dua persyaratan untuk Anti-Radiation Missiles (ARMs) jangka panjang untuk melengkapi AGM-45 Shrike jarak pendek.