Powers had been sentenced to 10 years’ confinement in the USSR but, amidst concerns that he might reveal any remaining secrets to the Soviet authorities, the U.S. government agreed to exchange Powers and imprisoned student Frederic Pryor in return for Soviet Colonel Rudolf Abel.

Josef Jakobs was found guilty of espionage by General Court Martial and taken to the miniature firing range at the Tower of London where he was strapped to a wooden Windsor chair and killed by firing squad at 7:12am.