TYB!
o7
When you get read (Red) into a SENEX (Senior Executive Service) Clearance, which is above Yankee White (President), you receive what is called the "Oklahoma City Briefing".
At least that's what they called it back in 1999, the Clinton years….
Also, John Brennan signed off on ALL of the Visas for the 911 Hijackers while he was the CIA Station Chief at Jeddah, Saudi Arabia….