Tech Sgt. Julio Serrano, 9th Force Support Squadron, shops for a handgun at the Exchange at Beale Air Force Base, Calif., Nov. 5, 2012. The exchange has sold more than 40 firearms after beginning to sell them Nov. 2. Purchasers are required to pass a background check and fulfill a 10 day waiting period before taking home a firearm. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)