"It was weird how it started coming down. It looked like it was a timed explosion." - Dominick Derubbio, FDNY Battalion Chief
"The lowest floor of the south tower actually look liked someone had planted explosives around it." - Brian Dixon, FDNY Battalion Chief
"It seemed like on television they blow up these buildings. It seemed like it was going all the way around like a belt, all these explosions." - Rich Banaciski, FDNY Firefighter
"We originally thought there was like an internal detonation of explosives because it went in succession, boom, boom, boom, boom, and then the tower came down." - Ed Cachia, FDNY Firefighter
"With each popping sound it was initially an orange and then a red flash came out of the building and then it would just go all around the building on both sides as far as I could see. These popping sounds and explosions were getting bigger, going both up and down and then all around the building." - Karen Deshore, FDNY Captain