Army Spc. Adrian Castillo is seen behind a plume of smoke as he drinks water from his canteen during testing for the Expert Field Medical Badge on Joint Base Elmendorf-Richardson, Alaska, Sept. 20, 2013. Castillo is assigned to the 25th Infantry Division's 2nd Battalion, 8th Field Artillery Regiment, 1st Stryker Brigade Combat Team, Alaska. Army Spc. Adrian Castillo is seen behind a plume of smoke as he drinks water from his canteen during testing for the Expert Field Medical Badge on Joint Base Elmendorf-Richardson, Alaska, Sept. 20, 2013. Castillo is assigned to the 25th Infantry Division's 2nd Battalion, 8th Field Artillery Regiment, 1st Stryker Brigade Combat Team, Alaska. SHARE: Download: Full Size (2.62 MB) Tags: Photo Essays Credit: VIRIN: 008282-N-NGW02-326.jpg Photo Gallery