Building 7 was not hit by any plane.
The Fire commander leading the fight on the day, said that "the fires in WTC 7 were under control and only needed 2 teams to put it out". He called for the area command to assign the teams to fight the fire. They started to put the fires out, only to be told after half an hour to abandon their positions, and evacuate the building. They argued with the commanders that the fires were almost out, but the commanders radioed they had to evacuate immediately as the building was going to collapse and trap them in it. They radioed back saying they (The commanders) were talking rubbish as there was very little damage to the building and there was no way a collapse was imminent. They were then told not to argue but to evacuate immediately. Leave everything, run. About 5 minutes after evacuating the building it collapsed symmetrically to the ground into it's own footprint.
There are dozens of videos on YTube where firemen talk about what they heard and saw, as they evacuated the building. They describe hearing dozens of explosions from the top of the building on every floor all the way to the bottom. They also describe these explosions as exactly like a demolition.
None of this was ever mentioned in the NIST reports, where they completely ignored any and all testimony regarding explosions, not just in building seven but WTC 1 and 2.
As for the assertion that multiple structural steel support beams were sheered by an Aluminum can, I guess we will never know because the evidence of what happened to the steel was never gathered due to the steel being removed immediately from the scene of the crime. Removal of evidence from a crime scene is a capital offence btw. Coverup anyone....