Shooting Stars Marines fire an M777 howitzer during Service Level Training Exercise 4-25 at Marine Corps Air-Ground Combat Center Twentynine Palms, Calif., July 11, 2025. The exercise provides a realistic training environment that produces integrated, combat-ready forces. SHARE: Download: Full Size (1.43 MB) Tags: Exercises, training, Marine Corps, Service Level Training Exercise, service level training exercise 25 Credit: Marine Corps Lance Cpl. Judith Ann Lazaro VIRIN: 250711-M-FC877-1128K.JPG Photo Gallery