Sikorsky CH-3E "Jolly Green Giant".

The CH-3E is the US Air Force version of the Sikorsky S-61 amphibious transport helicopter developed for the US Navy. Fifty CH-3Es were modified for combat rescue missions in Vietnam with added armor, defensive armament, self-sealing fuel tanks, a rescue hoist, and in-flight refueling capability. In Vietnam they were given the nickname "Jolly green Giant" and redesignated HH-3E.

The CH-3E had a crew of three, two General Electric T58-GE-5 turboshaft engines of 1,500 hp each. Maximum speed was 177 mph, cruising speed was 154 mph, range was 779 miles with external fuel tanks and a service ceiling of 21,000 feet.