Observer photo/Stuart Hedstrom PURPLE HEART FOR U.S. MARINE SGT. SLOAT -- A posthumous Purple Heart for her son was presented to Clarice Sloat Call on Aug. 15 at the Dover-Foxcroft American Legion on behalf of U.S. Marine Corps Sgt. Gregory A. Sloat. Sloat perished in the crash of an HMH 463 helicopter in Vietnam on Feb. 18, 1971. Thanks to the efforts of his fellow Marines, an investigation determined that Sloat and the other eight on board the helicopter all are eligible for Purple Hearts.