Machine Gun Air Force Airmen 1st Class Tyler Parrish, top, and John Smith load a M240B machine gun during live-fire training at Grezelka range, Joint Base Elmendorf-Richardson, Alaska, Oct. 27, 2016. Parrish and Smith are installation entry controllers assigned to the 673rd Security Forces Squadron. Air Force photo by Alejandro Pena SHARE: Download: Full Size (2.44 MB) Tags: Air Force, training, Airmen Credit: Alejandro Pena VIRIN: 161027-F-YH552-019A.JPG Photo Gallery