9/11 fire-fighters: explosives in building, page-223

WTC7

Controlled explosion.

Why? Cause a third plane failed to make it's destination, so to avoid the planted explosives from being discovered they detonated WTC7 claiming it an unsafe structure?? Unsafe how? To my understanding the building was unaffected by the carnage of the day of 9/11. What rational explanation is there to demolish it. A controlled explosion of this magnitude would take weeks for experts to plan and set the explosive devices. How did they manage this so quick I wonder? Serious and obvious lies being told here.

IMO