Keywords: US Navy 021124-N-9251B-017 Sailors deploy probes used during testing of the Integrated Maritime Portable Acoustic Scoring and Simulation (IMPASS) system.jpg en At sea aboard USS O Bannon DD 987 Nov 24 2002 -- Sailors deploy probes used during testing 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-017 Navy http //www navy mil/view_image asp id 3532 U S Navy Photo by Photographer s Mate 1st Class Marthaellen L Ball PD-USGov-Military-Navy USS O'Bannon DD-987 |