Communications Control Center Shift Supervisor, STAFF Sergeant Brian Molloy, USAF, 86th Communications Group, goes over recall procedures during Threatcon Charlie, at Ramstein Air Base Germany on 13 September 2001. The measures went into effect after terrorist attacks on the World Trade Centers Twin Towers in New York and at the Pentagon, when hijackers deliberately flew civilian airliners into the buildings, on the morning of 11 September 2001