Bring in the commander of the 6th Fleet at the time. The 6th Fleet was monitoring the Benghazi situation from the beginning, had an intervention planned and was ordered to stand down. Mullen knows this. Get the Commander under oath. Many people have lied to protect someone big.A line commander would probably tell the truth. Who gave the stand down order and why is the most important question.
Don’t have to be Sherlock Homes or a brain surgeon to learn who in fact gave the Stand down order.