U.S. Navy Sailors from Helicopter Sea Combat Squadron-21 (HSC-21), clean an MQ-8C Fire Scout unmanned helicopter assigned to HSC-21 from Naval Air Station North Island, San Diego California, during the Marine Corps’ service level training exercise (SLTE) 5-23 at Marine Corps Air-Ground Combat Center, Twentynine Palms, California, July 23, 2023. Exercises like SLTE 5-23 are critical to increasing our joint capabilities, proficiency, and lethality. (U.S. Air Force video by Senior Airman Ariel O'Shea) More