Marine Corps' CH-53D helicopter makes last flight

The Marine Corps has flown its last mission using Vietnam-era CH-53D heavy lift helicopters. Pilots with Heavy Helicopter Squadron 362, under the direction of Miramar Marine Corps Air Station command, made the last flight over the skies of Helmand province in Afghanistan on Thursday. The squadron started using the model in 1969. The twin-engine helicopters are being phased out in favor other versions of the CH-53 that have three engines.

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