Keywords: US Navy 021124-N-9251B-542 Smoke is released from the barrel of the ship^rsquo,s MK-45 five inch gun mount during a live fire exercise.jpg en At sea aboard USS O Bannon DD 987 Nov 24 2002 -- Smoke is released from the barrel of the ship s MK-45 five inch gun mount during a live fire exercise The destroyer is participating in testing and evaluation of the Integrated Maritime Portable Acoustic Scoring and Simulation IMPASS system IMPASS is part of the Virtual at Sea Training VAST system used to test the accuracy of shipboard weapons systems as well as live fire skills U S Navy Photo by Photographer s Mate 1st Class Marthaellen L Ball RELEASED 2002-11-24 021124-N-9251B-542 Navy http //www navy mil/view_image asp id 3535 U S Navy Photo by Photographer s Mate 1st Class Marthaellen L Ball PD-USGov-Military-Navy 5 /54 caliber Mark 45 gun firing USS O'Bannon DD-987 |