PRIME BEEF 2025 Exercise - ROWPU
U.S. Air Force Airman 1st Class Angel Rivera Cordoba, water fuel systems maintenance journeyman, assigned to the 156th Civil Engineer Squadron, Puerto Rico Air National Guard, tightens valves on a Reverse Osmosis Water Purification Unit during the Prime BEEF day exercise at Muñiz Air National Guard Base, Carolina, Puerto Rico, June 8, 2025. The ROWPU was set up to provide potable water service for distribution to the installation to meet mission requirements during the exercise. (U.S. Air National Guard photo by Senior Airman Nilsa Mendez)