The lack of assistance is not the militaries fault. They can only act as directed by the civilian commander in chief. They have plans in place for almost every situation possible. They have teams ready for almost every plan. However, the military can not act until ordered to do so. They can not enter a hostile country with out orders to do so. They can not save embassy personnel without orders to act. When the military does not act, it is not because they choose not to. It is because our elected officials did not authorize them to act.
Do not blame our military for this, blame the true culprit. The one man that was getting his full night sleep while our men were fighting for their lives.