(LEAD) Presumed U.S. troop remains return home from N. Korea
(ATTN: RECASTS dateline; ADDS more info in paras 10-12)
WASHINGTON/SEOUL, Aug. 2 (Yonhap) -- The remains of presumed U.S. soldiers killed in the 1950-53 Korean War returned home on Wednesday to a solemn ceremony in Hawaii, marking the beginning of a l