U.S. Marine Corps Cpl. Nicholas Muller, left, an administrative specialist with 4th Civil Affairs Group, Force Headquarters Group, aims his weapon at a simulated active shooter at Naval Operational Support Center & Marine Corps Reserve Center Miami, June 7, 2019. All 160 Marine Corps Reserve Training Centers are expected to exercise their active shooter emergency action plan semi-annually with their Inspector-Instructor staff and Reserve Marines. (U.S. Marine Corps photo by Lance Cpl. Jose Gonzalez)

U.S. Marines with 4th Civil Affairs Group (CAG) visited Robert Riechman, a U.S. Marine Corps veteran from St. Louis, Missouri, to celebrate his early 98th birthday at the Madyson at Palm Beach Gardens in Palm Beach Gardens, Florida, February 24, 2022.

U.S. Marines with 4th Civil Affairs Group (CAG) and U.S. Marine Corps Forces, South participated in a Disaster Field Operations Course (DFOC) hosted by Florida International University (FIU) at their Biscayne Bay Campus, Florida, July 15-17, 2022.