test pilot Herman R. "Fish" Salmon (right) posing with long-time president of the Lockheed Corporation, Robert E. Gross 1956

On the far left is Lockheed Test Pilot Tony LeVier, on the far right is another legendary aviator and test pilot, Herman R. "Fish" Salmon.
If you look over LeVier's right shoulder, you will see a fairing covering this F-104 Starfighter's jet intake. The F-104's intake design was initially classified,
and early publicity photos featuring the aircraft were made with these fairings concealing the aircraft's intake configuration.
Accordingly, it is very likely that they aircraft they are standing in front of is one of the first two service test Lockheed
YF-104A Starfighters (USAF Serial Numbers 55-2955 or 55-2956).
The gentleman in the suit is the (then) long-time president of the Lockheed Corporation, Robert E. Gross.
Since the YF-104A first flew in February 1956, and Robert Gross last year leading Lockheed was 1956.

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