Sen. Martha McSally, R-Ariz., said Wednesday that while in the Air Force, she was raped by a superior officer.

The dramatic revelation came as she testified before a Senate Armed Services subcommittee hearing on sexual assault in the military.

“I was preyed upon and raped by a superior officer,” McSally told the hearing in her opening statement.

She testified that she blamed herself, adding, “I was ashamed and confused.”