Air Force Office of Special Investigations Commander, Brig. Gen. Keith M. Givens, presents an American Flag at Arlington National Cemetery Jan. 19 to Heather Lamb, the partner of Special Agent Adrianna M. Vorderbruggen who was one of six Airmen killed by a suicide bomber near Bagram Air Base, Afghanistan, Dec. 21, 2015. (U. S. Air Force photo/Michael Hastings)