Description given with photo: "Howard Hughes sits with his witnesses at Senate War Invest. Hearing. 1st row (l to r): Glen Odekirk & Thomas Slack; 2nd row (l to r): E. A. Peterman, Richard (?), & Howard Hughes; 3rd row (l to r): Edward Schwartz, John Parkinson, & John R. (?)."
Narrator affiliation: Physicist, First director, Lawrence Livermore Laboratory; Arms control negotiator; Director, Defense Dept. Research adn Engineering