This declassified Project CHECO report cover documents the official Rules of Engagement for Operating Location Alpha Alpha (OLAA), the covert designation for the Air Commando base at Nakhon Phanom, Thailand, from November 1969 through September 1972. Originally classified Top Secret, the report was released to the public in 2006, shedding light on the operational constraints governing A-1 Skyraider and Air Commando missions over Laos. Project: 219418