Cbs last night apologized for using the wreckage of an American B-52 bomber as a prop during an episode of “Amazing Race’’ in Hanoi.

The reality show’s contestants had run around the downed Vietnam War-era craft, now part of a memorial, in last week’s episode.

This was “insensitive to a group that is very important to us: our nation’s veterans,’’ an announcer read as the apology was scrolled on screen.