Navy Lt. Dennis W. Peterson, 28, (left) was the pilot on a 1967 mission to rescue a downed pilot. Ensign Donald P. Frye, 23, (center) was a member of his crew. Lt. Cmdr. Richard D. Hartman (right) was the pilot they tried to rescue. The rescue helicopter was shot down and Peterson, Frye and two others onboard were killed. (U.S. Navy)
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