You're getting buried down because your comment was stupid, not because "doing forensic analyses of crime scenes is uncool". All this "evidence" you speak of was either incinerated by the incredibly high heat (you know, hot enough to damage the internal structure of a skyscraper to the point of falling) or tainted by the thousands of people who've worked at ground zero. Oh, and these black boxes you have your panties in a bunch about? Yes. They were likely destroyed when a 110 STORY BUILDING fell on them.You ought to change your username, calling yourself physicsguy is like spitting in the face of physics guys everywhere.