A procession of law enforcement is being held in Burlington Thursday for David Maland, the Border Patrol agent killed in the line of duty last week in Coventry.

David Maland, 44, was a military veteran who worked security duty at the Pentagon during the Sept. 11 attacks, his family said.

David C. Maland was conducting the traffic stop​ on Interstate 91, about 20 miles from the Canadian border when "an exchange of gunfire occurred," FBI said.