428-GX-KN-19693_Box 875:   A High Altitude Supersonic Target (HAST) mid-air retrieval by a U.S. Air Force CH-3E “Sea King” Helicopter near Point Mugu, California.  Photographed by PH1 John D. Brittain, May 18, 1971.  Photographed from reference card. Black and white image only. (2015/12/22).
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