Keywords: RH-53Ds sweeping the Suez Canal 1974.jpg Two U S Navy Sikorsky RH-53D Sea Stallion helicopters of helicopter mine countermeasures squadron HM-12 Sea Dragons sweeping the Suez Canal or one of the lakes during Operation Nimbus Moon in 1974 scan from Robert L Lawson ed The History of US Naval Air Power The Military Press New York USA 1985 ISBN 0-517-414813 p 206 US Navy cited as source 1974 USN PD-USGov-Military-Navy Sikorsky RH-53 US Navy Suez Canal Clearance Operation 1974-1975 1974 MK-105 Magnetic Influence Minesweeping System Great Bitter Lake Helicopter Mine Countermeasures Squadron 12 United States Navy 1974 in Egypt |