Keywords: US Navy 030816-N-1928O-023 Aviation Ordnanceman 1st Class Mark Mainland, of Racine, Wis., loads an under-water surveillance sonobuoy into an ejection chute a P-3C Orion.jpg en Naval Air Station Keflavik Iceland Aug 16 2003 -- Aviation Ordnanceman 1st Class Mark Mainland of Racine Wis loads an under-water surveillance sonobuoy into an ejection chute a P-3C Orion assigned to The Liberty Bells of Patrol Squadron Sixty Six VP-66 during Keflavik Tactical Exchange 2003 KEFTACEX 03 The sonobuoys act as detection devices that relay an array of data regarding submarines that are being tracked by the aircraft Seven countries are participating in the annual anti-submarine warfare exercise VP-66 from Naval Air Station Willow Grove Penn is the only squadron comprised entirely of Naval Reservists that are participating in KEFTACEX 03 U S Navy photo by Journalist 2nd Class Mark O Donald RELEASED 2003-08-16 030816-N-1928O-023 Navy http //www navy mil/view_image asp id 9216 U S Navy photo by Journalist 2nd Class Mark O Donald PD-USGov-Military-Navy P-3 Orion in detail Patrol Squadron 66 United States Navy Naval Air Station Keflavik Aviation Ordnanceman Sonobuoys |