U.S. Air Force Senior Airman Harry Parsons from the 239th Combat Communications Squadron, Jefferson Barracks, St. Louis, Mo., installs a voice over internet protocol phone, May 6, 2014 during exercise Patriot Warrior at Fort McCoy, Wis. United States military reserve components from all branches participate in combined exercises Patriot Warrior, Global Medic, Diamond Saber and CSTX in preparation for upcoming deployments in joint environments. (U.S. Air Force photo by Master Sgt. Francisco V. Govea II/ Released)