The US Border Patrol agent murdered during a traffic stop with a migrant in Vermont was an Air Force veteran who survived the 9/11 attack on the Pentagon, his family said. David “Chris” Maland, 44, died Monday afternoon after a shootout with a German national on Interstate 91 about 20 miles from the Canadian border,

He had a tremendous respect and pride for the work he did; he truly embodied service over self,” his family said.

Federal authorities investigating the shooting death of a Border Patrol agent on Monday say a German national in the U.S. on a “current visa” was also killed in the exchange of gunfire.