The AGM-86 ALCM is an American subsonic air-launched cruise missile (ALCM) built by Boeing and operated by the United States Air Force. This missile was developed to increase the effectiveness and survivability of the Boeing B-52H Stratofortress strategic bomber. The missile dilutes an enemy's forces and complicates air defense of its territory. The concept started as a long-range drone aircraft that would act as a decoy, distracting Soviet air defenses from the bombers. As new lightweight nuclear weapons emerged in the 1960s, the design was modified with the intent of attacking missile and radar sites at the end of its flight. Further development extended its range so much that it emerged as a weapon allowing the B-52s to launch their attacks while still well outside Soviet airspace, saturating their defenses with hundreds of tiny, low-flying targets that were extremely difficult to see on radar. The ALCM so improved the capabilities of the US bomber force that the Soviets developed new technologies to counter the weapon. Among these were airborne early warning aircraft and new weapons like the MiG-31 and Tor missile system specifically to shoot down the AGM-86. The Air Force responded with the development of the AGM-129 ACM, which included stealth capabilities. The ending of the Cold War led to cutbacks in this program, and its expensive maintenance eventually resulted in it being abandoned in favor of life extensions to the original ALCM. Examples of the AGM-86A and AGM-86B are on display at the Steven F. Udvar-Hazy Center of the National Air and Space Museum, near Washington, D.C. History Quail The ALCM traces its history to the ADM-20 Quail missile, which began development in February 1956. Quail was the ultimate outcome of several similar programs to develop a small decoy aircraft that would be launched from bombers during their approach to targets, presenting false targets to saturate the defenses and allow the bombers to escape an attack. The small jet-powered drone aircraft had a simple inertial navigation system (INS) that allowed it to fly a pre-programmed course that would make it visible to known Soviet defensive sites. A number of radar jammers and radar reflectors were intended to make it appear like a B-52 on a radar display. Quail was designed in the mid-1950s when the normal attack profile for a strategic bomber was to fly as high and fast as possible to reduce the time the defenders had