TROOP THANKS U.S. Defense Secretary Chuck Hagel, left, addresses troops on Al Udeid Air Base, Qatar, Dec. 10, 2013. Hagel thanked the troops for their service, took several questions and posed for personal pictures with the service members. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 322920-V-GKE62-495.jpg Photo Gallery