A U.S. Border Patrol agent who was killed in Vermont during a traffic stop near the Canadian border was a military veteran who worked security duty at the Pentagon during the Sept. 11 attacks, his family said.

David "Chris" Maland was a U.S. Border Patrol agent and a military veteran who worked security duty at the Pentagon during the time of the Sept. 11 attacks, according to his family

David "Chris" Maland, the U.S. Border Patrol agent allegedly killed by a German national during a traffic stop near the Vermont-Canada border on Monday, was an Air Force veteran.