As seen through a night-vision device, an Army Ranger provides security during a an airborne training operation on Tyndall Air Force Base, March 4, 2014. As seen through a night-vision device, an Army Ranger provides security during a an airborne training operation on Tyndall Air Force Base, March 4, 2014. SHARE IMAGE: Download Image: Full Size (2.5 MB) Tags: Photo Essays Photo By: VIRIN: 727162-M-TSB45-020.jpg Photo Gallery