Sure it is, Lash. I have not "ignored" the claim that a fireball caused the observations of the elevator, and the blown out windows, and the explosion experienced by Wiliam Rodriquez and the others. I consider this claim. The elevator in question did not go up to the impact zone. Therefore there is no shaft to conduct the fireball down to where it is alleged to have caused all this damage. The elevators which did go up to the impact zone were not, blown out. Thus the evidence is consistent with an explosion in the basement, and is inconsistent with a fireball travelling down the elevator shaft.
When you combine this evidence with the eyewitness testimony which states that the basement explosion occurred before the jet impact, then corroborate all of that with the seismic data and the radar data, you have a very compelling case for an explosion in the basement.
This thread has clearly touched a nerve with you anti-science guys. The only thing you have come up with is the possibility that LDEO's clocks were behind by 17 seconds! This is a huge accusation. This is a scientific observatory whose accuracy crucially depends on correct timestamping.
So to believe the official account, we have to believe that LDEO's clocks were behind by 17 seconds, and Wiliam Rodriguez (and the others) were mistaken about the timing and location of the explosion, and these mistaken recollections match the mistaken timings of LDEO (quite a coincidence), and that Lt. Walsh is mistaken about which elevator was blown out, and this mistake coincidentally corroborates the mistaken eyewitness testimony and the mistaken seismic times?!??! This is what I am supposed to believe ???