Keywords: P-3 inflight refueling KC-135A NAN6-79.jpg A U S Navy Lockheed P-3 Orion of the Naval Air Test Center at NAS Patuxent River Maryland USA during in-flight refueling tests in 1979 The tanker aircraft is a U S Air Force Boeing KC-135A Stratotanker which used the USAF boom refueling system The U S Navy always used and uses the probe-and-drouge system U S Navy Naval Aviation News June 1979 http //www history navy mil/nan/backissues/1970s/1979/Jun79 pdf 1979 USN PD-USGov-Military-Navy Lockheed P-3 Orion Aerial refueling |