+"San Diego California USA" +1923 stock footage and images

A DH-4B receives the first mid-air refueling from a airplane flown by 1st Lts. Hine and Seifert in San Diego, California.

The first mid-air refueling at Rockwell Field in San Diego, California. 1st Lieutenant Virgil Hine and 1st Lt. Frank W. Seifert pose next to the cockpit of a modified United States Army Air Service Airco DH-4B. Workmen repair a hose under the fuselage of the modified DH-4B tanker aircraft. A workman pulls the hose out from under the aircraft. A second DH-4B aircraft in the background. The modified DH-4B transfers fuel to another modified DH-4B via a hose between the aircraft. Wings of DH-4B camera airplane. The modified DH-4B tanker with the fueling hose trailing behind it. Two modified DH-4Bs. The tanker aircraft with the hose trailing below it moves away from the fueled airplane and flies away.