Command Post Exercise
Marine Corps cryptologic analyst assigned to 1st Radio Battalion, I Marine Expeditionary Force Information Group, monitors electromagnetic spectrum during training in support of Command Post Exercise at Marine Corps Base Camp Pendleton, California, December 12, 2018 (U.S. Marine Corps/Brendan Mullin)

Photo by: Lance Cpl. Brendan Mullin |  VIRIN: 181212-M-JX780-1031.JPG