A view of Howard Hughes (right) being asked about his controversial XF-11 photo reconnaissance plane by Senator Harry Cain (left), Republican of Washington, in Culver City, California. An unidentified man sits between the two.

Photograph of Grover Whalen, Howard Hughes, and Al Lodwick during a parade procession for the completion of Hughes' Round-the-World flight.

Photograph of Grover Whalen, Howard Hughes, and Al Lodwick during a parade procession for the completion of Hughes' Round-the-World flight.

Photograph of Grover Whalen, Howard Hughes, and Al Lodwick during a parade procession for the completion of Hughes' Round-the-World flight.

Description given with photo: "Hughes Pilots Radar-Equipped Plane Culver City, Calif. -- First passenger plane equipped with radar is flown in demonstration May 1st by Howard Hughes (left) and co-pilot R.C. Loomis over Culver City. Pilots using this equipment will be warned of approaching obstacles by lights flashing on radar panel. Two lights (lefts) with 2,000-foot range, are used to guarantee clearance over mountains; two lights (right) with 500-foot range, are a safety device for approaches and landings. Either set of lights warns against approaching aircraft. Trans-World Airline plans to install radar on its passenger planes. Credit (ACME) 5-3-47."