They knew the crash site, the second plane on the mission witnessed the crash.The next day the partol found one airman alive but who died after a time..I don't know how long. There was a decapitated airman.Everyone went in the missing mode.One year and one day they were declared killed in action. One year later remains were recovered. Two years later remains were sent stateside for a group burial..this after several "burials" on Leyte and Manila. 1951 skeletal remains were brought by natives to the US Counsel.This prompted two more searches of the crash site. Skeletal remains were found both times. All from the documented site. The remains from three discoveries in 1951 are now unaccounted for.