A U.S. Army soldier killed in the Korean War is finally home after being identified through DNA testing.Nineteen-year-old Sgt. Celestino Chavez Jr. had been considered missing in action since 1953.After he was positively identified last year, he was buried this week in his hometown of Gallup, New Mexico.RELATED STORY | ICE arrests newlywed wife of Army soldier at military base just days after they were marriedChavezs remains were discovered amon…