Joint Chiefs Meeting Defense Secretary Jim Mattis meets with the Joint Chiefs of Staff at the Pentagon, Jan. 23, 2017. DoD photo by Air Force Tech. Sgt. Brigitte N. Brantley SHARE IMAGE: Download Image: Full Size (0.54 MB) Tags: bob work, paul selva, JIm Mattis, Soldiers, Sailors, Army, SecDef, DepSecDef, Chairman, Joint Chiefs, Joe Dunford, Navy , AIR FORCE, Vice Chairman, Airmen , MARINE CORPS, MARINES Photo By: Brigitte N. Brantley VIRIN: 170123-D-GO396-0016D.JPG Photo Gallery