Department-Level Exercise (DLE) Series

Through this series, the Department of the Air Force is preparing to be a stronger, more lethal deterrent force, to provide an advantage against competitors and adversaries across all domains, and to ensure regional stability in the Indo-Pacific and beyond.

The DLE series will incorporate multiple command exercises into one overall threat deterrence scenario, including Resolute Force Pacific (REFORPAC), Resolute Space, Mobility Guardian, Emerald Warrior and Bamboo Eagle 25-3.

It will also integrate multiple allies and partners in specific component exercises with shared interests. Partner integration is critical to U.S. efforts to ensure regional and global peace and stability and provides a decisive advantage against complex threats.

SLTE 4-25: V28 Range 106

2nd Marine Division

Video by Cpl. Noelia Vazquez

July 12, 2025 | 2:22

U.S. Marines with 2d Battalion, 8th Marines, 2d Marine Regiment, 2d Marine Division conduct a live fire range with the M252 81mm mortar system during Service Level Training Exercise 4-25, at the Marine Corps Air-Ground Combat Center, Twentynine Palms, California, July 12, 2025. SLTE 4-25 is designed to be a challenging, realistic training environment that produces combat-ready forces capable of operating as an integrated Marine Air Ground Task Force across all domains of military operations. (U.S. Marine Corps video by Cpl. Noelia Vazquez) More