U.S. Marine Corps 1st Lt. John Collier, a Ramona, California native, field artillery officer with 5th Battalion, 14th Marine Regiment, 4th Marine Division, talks on the radio during a Fire Support Coordination Exercise as part of Service Level Training Exercise 0-25 at Training Area Quackenbush, Marine Corps Air-Ground Combat Center, Twentynine Palms, California, Dec. 6, 2024. FSCEX is a live-fire training event integrating infantry battalion combat operations center functions, distributed artillery, mobile fire support teams, close air support assets, and electronic warfare support teams. SLTE 0-25 is designed to enhance readiness across core Mission Essential Tasks and prepare Marines for Force-on-Force operations. (U.S. Marine Corps photo by Lance Cpl. Enge You)