U.S. Marine Corps Col. Brian Rideout, on-coming commanding officer, I Marine Expeditionary Force Information Group, receives the unit colors from Col. Dawn Alonso, off-going commanding officer, I Marine Expeditionary Force Information Group during a change of command ceremony at Marine Corps Base Camp Pendleton, California, July 26, 2019. Col. Dawn Alonso relinquished command to Col. Brian Rideout as commanding officer of I Marine Expeditionary Force Information Group. (U.S. Marine Corps photo by Cpl. Anabel Abreu Rodriguez) - U.S. Marine Corps Col. Brian Rideout, on-coming commanding officer, I Marine Expeditionary Force Information Group, receives the unit colors from Col. Dawn Alonso, off-going commanding officer, I Marine Expeditionary Force Information Group during a change of command ceremony at Marine Corps Base Camp Pendleton, California, July 26, 2019. Col. Dawn Alonso relinquished command to Col. Brian Rideout as commanding officer of I Marine Expeditionary Force Information Group. (U.S. Marine Corps photo by Cpl. Anabel Abreu Rodriguez)