Tape of 9/11 Controllers Was Destroyed

Air traffic controllers who handled two of the hijacked flights on Sept. 11, 2001, recorded their experiences shortly after the planes crashed into the World Trade Center but a supervisor destroyed the tape

destruction occurred even though

FAA sent a directive three days after the hijackings: "Retain and secure until further notice ALL Administrative/Operational data and records. ... If a question arises whether or not you should retain the data, RETAIN IT."