Input (grade 12): The U-2 came to public attention when CIA pilot Francis Gary Powers was shot down over Soviet territory on 1 May 1960, causing the U-2 incident.
Output (grade 12): The United States wanted to keep the purpose of the U-2 secret, but on May 1, 1960, Francis Gary Powers was shot down in his U-2 by a Soviet SAM SA-2 missile.