So you surmise that it was a professional job and not just a home gown fertilizer fuel oil job. According to the peripheral damage it must have been a humdinger of an explosion. No to mention that this place must have been locked up tighter than a drum almost like Fort Knox. I suppose that it may have contained records of recent events and communications which someone did not want to see the light of day. I have a hunch that we may not have seen everything yet.
The video showing the explosions occurring from a distance also showed a clear sequence of events...
The first explosion was far and away the largest and it was pure blast... but it is now cut out of the edited video I posted. It sent a blast wave out from the center which you could see in its deformation of the air in a pressure wave. That was “the big one”... as only that one shook the camera. It left no smoke at all.
The second blast, the first shown on the edited film I posted a link to... also had a blast wave, and it sent a smoke trail up in a straight line out and away, into the air at an angle. Others have since posted doctored videos of that event, reversing the motion in the original video while claiming it is a missile trail inbound... which it did not appear to be on the unedited original video. In the original, you can see the trail form and then drift... and then disappear... which I found unlikely in the original... so the original might not be perfect either. But, those later versions missing the first blast... clearly are less reliable. The original video posted immediately after the explosion showed the smoke trail starting around ten seconds after the first blast wave, only after the camera shook, and maybe a bit more time than that afterwards, before the third blast... but, it rose from the ground leaving a trail out and away from the building... That, to me, suggests a shaped charge explosion. A missile inbound wouldn’t make a blast wave moving out... BEFORE it arrived ?
The third blast... is the one that made the big could of white smoke... I’d guess that would be some sort of an incendiary charge... maybe a bit of thermite to melt stuff down thoroughly ? That cloud “isn’t in a big hurry” as it emerges ?
The chemical analysis of the site would be fascinating, given three distinct events with VERY different signatures.
Someone did post a link, above, that does show the RV blowing up... while also doctoring the video to claim that isn’t what it is showing. It’s pretty poor work in doctoring it... simply zooming in to move the images relative to the prior view... which is just stupid. Choose points of reference in that vid and note the change ? The street light on the corner to the left of the crosswalk... shouldn’t move... but it does... with a zoom in on the pole. You see a close up of only a part of the streetlamp as the explosion occurs...
Which explosion was that... the first one ? Must have been, since there wasn’t other disruption apparent on the street before that ? The blast coming from it appears to be almost entirely vertical...
Other posters on FR today have claimed the damage was confined to the AT&T building, not across the street... when the opposite is more true. The bombproof building suffered less, externally, than the one building right across the street from the hole on the second floor... where the entire facade of the building directly opposite was blown out the back of the building... while the neighboring buildings were relatively less effected ? Seems it was very directional... as you might expect of a charge blasting out of a bomb proof building ?
The blast pattern on the street shows two detonations, at least... the second clearing a V path of debris, the rubble free V being cleared from the AT&T building outwards. That is NOT what you would see from the RV blowing up in the street... but what you would see from a second blast after the RV blew up.
Others have asked... why is there no crater where the RV was parked ? Some have wrongly state the RV burn mark is directly outside the hole in the 2nd story. It is not.
The giant cloud of smoke from the third blast ? The video from the helo might be the best, and earliest, view ? Look for smoke coming from the hole in the AT&T building. What was burning in there ? Later video shows thick black smoke coming from a vehicle fire in the street... which is NOT what you see in the videos I’ve linked here... or in the doctored video someone else linked here. Also not what you see happening shortly after the event ? How did the vehicle fire get started ? Which vehicles burned ?
What is clear... is that there is a lot of disinformation being generated. That’s why I watched the original live video feeds and the first reports carefully... to see how things changed, later, and which things changed.