PRESS AVAILABILITY U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and Army Gen. Walt Natynczyk, Canadian chief of Defense, address the media during a joint press availability in Ottawa, Canada, Feb. 10, 2009. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 250523-J-DIB83-295.jpg Photo Gallery