Link?
This is what I have come across about a No Fly Zone, http://www.breitbart.com/Breitbart-Texas/2014/11/24/Ferguson-Declared-No-Fly-Zone-By-FAA
Smoke from fires and gunshots.
Just hearing Gov. Nixon never ordered Nat'l Guard to scene, that's why nothing short of additional help on scene.
Obama and Holder didn't want police "looking like military action (like Al Sharpton claimed area looked like last August!)