Thanks for posting. You almost forget that happened.
Lt Col White (l), of Astronaut Group 2, he was the first American to perform an EVA, during Gemini 4. This was to have been his 2nd ride.
LCDR Chaffee, (r), of Astronaut Group 3. This was to have been his first ride into space.
Looks like they had Gus sitting on a dictionary or phone book...
My uncle was friends with those guys. He had his wife and two kids at the launch and saw this tragedy in person. My aunt always said he never got over it.