I don't care if you don't want to hear my opinion on 9/11, because I will give it anyway.
My friend died in 9/11. He simply went to visit, and a month later, we got a call saying that he died. That was all. We didn't get an "I'm sorry" or "We are sorry for your loss call". They just hung up. It took less than 30 seconds to ruin my entire day. I don't care if it is a Conspiracy, or a terrorist attack, someone killed thousands of people. They deserve to pay either way.
If you want proof, bug off. I don't feel like getting links and photos. I state this on my honor and reliability.