THE THREAT, "ANGEL IS NEXT"

The threat, "Angel is next" was considered to be credible the day of 911. If this is the case and 'next' means 'next to be hijacked' then the hijacking of the planes must have been electronic. All of the flying that day suggests the planes were remotely flown into the buildings. Out of all of the hijackings Flight 77's crash into the Pentagon is the best evidence for remote hijacking. 

https://www.wired.com/2004/03/how-to-avoid-a-heat-seeking-missile/

At 9:29am, we are told, Hani Hanjour disengages the 757's autopilot, taking control of the plane, makes a corkscrew 330 degree descending right turn and accelerating to 530 mph Mach 0.7 putting the nose of the plane squarely through a window at a 55 degree angle taking out two of the Pentagon's most important rooms, the Navy's Navy Operations Center and the office of Defense Intelligence Agency. This is known as a spiral descent and shows that the pilots were trying to avoid being hit by an infrared heat seeking missile [1]. 

John Judge talks about the missile defenses at the Pentagon. 

Which entails that the Pentagon has a missile defense system. The plane was angled 145 degrees to the face of the Pentagon, so as to hit both the DIA and NOC these two offices were inside the inner second ring of the Pentagon. That is a quite an incredible piece of flying and for a first time 757 pilot, was certainly beyond the ability of Hani Hanjour's limited training. 

"[Flight 77] crashed through the windows of rooms 1E462 and 1E466, right below Pak's office, just north of Corridor 4 (Vogel, 431)." 

It is really inconceivable that a man who flunked out of pilot school could have truly been at the controls that day. It would have been hard for a professional pilot to perform those maneuvers and hit both offices. So, the planes were remotely hijacked. There is no getting around it. And, the threat 'Angel is next' is more evidence for that fact. I wonder if anyone has conducted a post mortem inspection of the code for the Honeywell avionics suite. I am sure that if they have the whole thing is classified. 

The government is promoting the cruise missile conspiracy theory. They are the only ones that benefit from it. The cruise missile theory takes your eye off the ball and the truth might have shut down the whole airline industry. In America the all mighty dollar rules above all else. The interest of big business trumps the truth and public safety. The hidden camera footage of the impact either shows sensitive things about the Pentagon's defenses or true speed of the plane. The plane was travelling supersonic [6]. 

This is why the tape has not been released. The emplacement of the missiles would be given away and because the Pentagon is a fixed structure the likelihood is; they are still there, because that is the optimal placement. 

Sources:
1. 

Duffin, Allan T. "Landing In Baghdad". Air & Space Magazine, November 2006, https://www.airspacemag.com/flight-today/landing-in-baghdad-12635538/.

2. 

Vogel, Steve. The Pentagon. Random House Trade Paperbacks, 2008.

3. http://www.sandiegouniontribune.com/lifestyle/people/sdut-garza-flight-instructor-hijacker-september-11-2015jan25-story.html

4. 

http://www.dailymail.co.uk/news/article-2034423/9-11-message-Air-Force-One-pilot-Mark-Tillman-got-flew-President-Bush.html

5.

https://www.wired.com/2004/03/how-to-avoid-a-heat-seeking-missile/

6.

Journalist Witnesses Pentagon Crash

," by John Dodge,

eweek.com

, 9/13/01

. . . There was a sonic boom and looking straight ahead there was a jet, what looked to be an American Airlines jet, probably a 757. And it came screaming across the highway, it was Route 110, on the west side of the Pentagon. The plane went west to east, hit the west side of the Pentagon. Immediately flames were strewing up into the air. There was white smoke. And then within seconds, thick black smoke. Everybody got out of their cars. People were shocked.

Then there was another plane that was off to the southwest and that made a beeline straight up into the sky and then angled off and we weren't sure if that was going to come around and make another hit or if it was just trying to get out of the way. That disappeared and we didn't see it again.

NOTES:
The 757-200 has the horsepower needed to go over 1500 Mph at sea level. Maximum Horsepower of a 757 is 1,675,665 for 127.5 tons. 200,000 horsepower is needed to move 25 tons 1500 Mph at sea level. The 757 weighs 5.1 times 25 tons. Therefore the 757 needs 1,020,000 horsepower to fly 1500 mph or 1.97 Mach at sea level. So it is conceivable that Flight 77 hit the Pentagon travelling over Mach 2. This is another reason why the footage of the crash is still secret. If Flight 77 was going Mach 2 or more at the time of impact into this would account for the multiring breach at the Pentagon. But, this also breaks with the official story. It is impossible for them to explain. So the "it was a missile" diversion was created. It is a lot easier to throw up a lot of chaff rather than deal with explaining what really happened, especially if what really happened involves hacking the Honeywell avionics suite.