Even IF they could not...the big question is why they NEVER tried to get there. Who called the stand down? Did Obama know? (he had to have been informed simply because of the nature of the terrorist attack), WHY did they stand down and never show up? WHO gave and WHO approved those orders? WHY the cover-up? Who told Susan Rice to follow the offensive video excuse? And WHO is being held ACCOUNTABLE Mr. Obama? You are more than an empty suit or an empty chair. You, Sir, are a traitor to the Constitution.
For forces outside of Libya there was no such thing as a "stand down" order. There is a "stand up" order or nothing.