Found this from Jennifer Griffin/Adam Housley from November,
BENGHAZI NEWS latest from FNCs Jennifer Griffin and Adam Housley
I believe it was Jennifer Griffin who broke the "stand down". Here's what the report says at the end:
..."According to a source who debriefed those who were at the CIA annex that night, When they asked for air support, they were told they could have an unarmed drone.
Fox News has now learned that the FBI and CIA have contacted the Global Response Staff (GRS) and Special Operating Forces teams who were involved that night and warned them about sharing information from the rescue efforts that night and have threatened to prosecute further leaks. "