AIMING IN Army Spc. Jacob Ostolaza provides security during a forced-entry parachute assault as part of a tactical field exercise on Joint Base Elmendorf-Richardson, Alaska, March 18, 2015. Ostolaza is assigned to the 25th Infantry Division's 4th Infantry Brigade Combat Team. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 652796-Z-HXL09-141.jpg Photo Gallery