Aviation Antisubmarine Warfare Operator Second Class Brett Ekert prepares to fire a M2-40 20mm mounted rifle from a SH-60F Carrier-Based LAMPS Antisubmarine Warfare Helicopter, from Helicopter Antisubmarine Squadron Seven (HS-7), "Dusty Dogs", which is based on USS Harry S. Truman (CVN 75) while supporting Operation SOUTHERN WATCH (OSW). TRUMAN is on station in the Arabian Gulf in support of OSW. OSW is the mission that enforces the coalition imposed southern "no-fly zone" over Iraq