Military working dog Iggy, handled by Staff Sgt. Zach Cahall, bites down on Senior Airman Alexander Nutting during MWD demonstration at Al Udeid Air Base, Qatar, April 5, 2014. Military working dogs are trained to bite and hold onto the suspect until their handler gives the command to release. Both Airmen are 379th Expeditionary Security Force Squadron MWD handlers. Cahall is a Cinccinati, Ohio, native deployed from Dover Air Force Base, Del. Nutting is a a Savage, Minn., native deployed from Moody Air Force Base, Ga. (U.S. Air Force photo/Senior Airman Hannah Landeros)