CH-53 Sea Stallion USAFSikorsky CH 53 USAF helicopter model. US Air Force versions of the CH 53 included the HH 53B, HH 53C and CH 53C Combat Search and Rescue helicopters. Ordered in September 1966, the first flight of the HH 53B Stallion took place in March 1967. By the end of the year the helicopters were in Vietnam, where they became known as the Super Jolly Green Giant. Later versions include the MH 53J and MH 53M Pave Low that have flown in the Gulf wars. These are