U.S. Navy Sailor perform critical medical care on a manikin during Operation Blue Horizon at MacDill Air Force Base, Florida, Feb. 26, 2025. Operation Blue Horizon is a joint force exercise that reinforces core competencies and fundamental practices for military medical professionals. Instructors graded participants on their proficiency in providing tactical combat casualty care, trauma nursing and aeromedical evacuation. (U.S. Air Force photo by Airman 1st Class Alicia Campbell) More