In 1960, the Soviet Union shot down a U.S. soldier. It was a U-2 spy plane the U.S. had sent to collect data over Soviet territory. Khrushchev, Soviet leader, demanded for the U.S. to stop all flights over Soviet territory, to apologize, and to punish all who were responsible. President Eisenhower responded to Khrushchev by only stopping flights. Francis Gary Powers, the pilot of the U-2, was tried by the Soviets and sentenced to 10 years in prison. In 1962, Powers was exchanged for Rudolf Abel, a Soviet spy. This is extremely important to the Cold War because the Soviets physically harmed an American. The U.S. was outraged by the Soviets holding one of their men. This just added to the tensions between the Soviet Union and the U.S.