Complex sentence: The US Navy took over the airfield entirely from the USAF in 1970 and the base continued to operate anti-submarine patrols, first with Neptunes, then with Lockheed P-3 Orions, until 1995.
Split into simpler sentences: The US Navy took over the airfield entirely from the USAF in 1970. The base continued to operate anti-submarine patrols, first with Neptunes, then with P-3 Orions, until 1995.