The AGM-88A high-speed antiradiation missile (HARM) offers performance improvements over the existing Standard ARM missile when used for defense suppression and similar operations.

The HARM missile, in conjunction with the launching aircraft's avionics, detects, identifies, and locates enemy radar, displays threat information, and computes target parameters. The HARM missile is 10 inches in diameter, 194 inches long, and weighs 780 pounds. The missile operates in three basic modes: