During the latter stages of the Cold War, the U.S. Navy would normally station an entire patrol squadron consisting of nine P-3C Orion aircraft on six-month rotations from their home bases at either NAS Jacksonville, Florida, or NAS Brunswick, Maine. These squadrons were frequently augmented by Naval Air Reserve P-3A or P-3B aircraft from various bases in the eastern United States, as well as NATO/Allied support consisting of Royal Air Force Hawker Siddeley Nimrod MR2s, Canadian Armed Forces CP-140 Auroras and other similar maritime patrol and reconnaissance aircraft from other NATO nations. During one period in 1985 that was characterized by exceptionally heavy Soviet Navy submarine activity off the United States, additional P-3C aircraft from NAS Brunswick and NAS Jacksonville, as well as several U.S. Navy S-3 Viking aircraft, the latter normally a carrier-based ASW platform with a home base of the former NAS Cecil Field near Jacksonville, Florida, were also temporarily deployed to Bermuda in order to augment the forward deployed P-3C squadron.