Computer Work Marine Corps Cpl. Christophe Tait, a data systems administrator with the new Network Activity - National Capital Region, monitors network activity from the operations floor at Marine Corps Base Quantico, Va., Aug. 31, 2020. SHARE: Download: Full Size (1.5 MB) Credit: Marine Corps Capt. Hector Alejandro VIRIN: 200831-M-HO284-316M.JPG Photo Gallery