U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and Gen. Gene Renuart, commander, Northern Command, answer questions during a media availability, Peterson Air Force Base, Colo., March 10, 2008. U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and Gen. Gene Renuart, commander, Northern Command, answer questions during a media availability, Peterson Air Force Base, Colo., March 10, 2008. SHARE IMAGE: Download Image: Full Size (3.32 MB) Tags: Photo Essays Photo By: VIRIN: 845923-H-NPZ15-525.jpg Photo Gallery