== Youngest casualty in buildings? == 

 The article list the youngest casualty from the collapse (i.e., not in an airplane) as being 17.  The citation for this point references a web page at http://www.albany.edu/mumford/wtc/age.htm that lists the casualties by age.  Indeed there is a 17 year old casualty listed, one Jeffrey M. Chairnoff.  However, a quick web search shows that Jeffrey M. Chairnoff was a 35 year old banker.  Someone with more time, interest, and skills than me should perhaps research this point and revise the article.