Smoky Scene An M1A1 tank with soldiers from the 11th Armored Cavalry Regiment participates in a joint forcible entry exercise at the National Training Center on Fort Irwin, Calif., Aug. 5, 2015. Fort Irwin is one of the latest locations where the Defense Department will evaluate 5G technology to enhance the capability of warfighters. SHARE IMAGE: Download Image: Full Size (0.5 MB) Photo By: C. Todd Lopez, DOD VIRIN: 150805-A-NU123-001M.JPG Photo Gallery