One of many developmental vehicles tested by the Air Force at White Sands for the purpose of attacking ground targets. The Missile would be launched from aircraft a a safe distance so the crew would not be in danger from ground anit-aircraft fire. The name is an acronym for "Surface Attack Guide Missile".
U.S Air Force
Dimensions
Length: 16.7 feet
Diameter: 14 inches
Wing Span: 3.3 feet
First Firing: 1972