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Staff Sgt. Justin Johns, left, and Senior Airman Tyler Reisenauer, right, both with the 521st Contingency Response Squadron, provide armed overwatch during exercise PACIFIC DAGGER Feb. 6, 2025, at Westover Air Reserve Base, Mass. The 621st Contingency Response Wing designed the exercise to test the unit’s airfield-opening mission, adding cold weather as an additional challenge. (U.S. photo by Master Sgt. Tristan McIntire) at Westover Air Reserve Base, Mass., February 6, 2025. The 621st Contingency Response Wing designed exercise PACIFIC DAGGER to test the unit’s airfield-opening mission, adding cold weather as an additional challenge. (U.S. Air Force photo by Master Sgt. Tristan McIntire)