2012 Benghazi attack
There were five U.S. commandos stationed at the CIA base in Benghazi about a mile from the consulate. They heard the attack starting and got ready to go rescue the ambassador. But they said later, the CIA station chief stopped them from going and told them to stay with the CIA. They also received a radio message from the consulate “If you guys do not get here, we are going to die!” The CIA later stated they were trying to get local Libyan militia to go help the consulate. But they also said they did not prevent the commandos from rescuing the consulate members.