US Navy Aviation Ordnanceman Michael Tune has a firm grip on the floatation coat of US Navy Aviation Ordnanceman AIRMAN Erik White as he attempts to rig a bundle of ammunition slings during replenishment at sea aboard USS HARRY S. TRUMAN (CVN 75). Slings are used to transfer ammunitions during a Vertical Replenishment at Sea (VERTREP). Truman and its battle group are participating in Exercise UNIFIED SPIRIT, a NATO led United Nations training exercise simulating peace keeping operations off the Atlantic coast