The Martin AN/GSG-5 Battery Integration and Radar DIsplay Equipment (BIRDIE) was a transportable electronic fire distribution center for automated command and control of remote surface-to-air missile launch batteries. The solid state radar netting system replaced the vacuum tube AN/FSG-1 at 3 United States Missile Master bunkers (Fort Lawton Air Force Station, Washington; Fort Heath, Massachusetts; and , New York) and BIRDIEs were deployed at over 25 US locations including Homestead-Miami, Florida; Providence, Rhode Island; and San Francisco. The AN/GSG-5 with 3 consoles was a direction center for up to 16 Nike missile batteries, but a smaller variant with only 1 console and without computer and storage equipment (single shelter AN/GSG-6) could control only 2 batteries and was the 1st BIRD