(AP) — The Navy says a sailor slain in a shootout this week at a Virginia base was killed when he jumped between a colleague and a civilian gunman.

The Navy says Master-at-Arms 2nd Class Mark Mayo was shot and killed during the gunfight Monday night at Naval Station Norfolk.

The Navy identified Mayo on Wednesday. He was 24 and from Hagerstown, Maryland.

The civilian had taken the weapon from a petty officer aboard the guided-missile destroyer USS Mahan.

The Navy says the civilian was later killed by another sailor following a gunfight. The gunman’s name wasn’t released.