This execution introduced to you by Westinghouse? I would have guessed that Thomas "DC recent is safer" Edison was guiding it, but this fellow is in the fuel chamber, not on an electric powered chair.
From the Getty Pictures description: circa 1945: An American prisoner, sentenced to death, is strapped into a chair in the gas chamber. The black hood carries a Westinghouse Electrical Business logo.
See complete picture below Panamax