What I could never understand is how a plane could vaporize into the pentagon, but then later they could identify all the passengers except 5.
How can a plane melt that much but human flesh can be recognized?
http://www.washingtonpost.com/ac2/wp...1202-2001Nov20
Investigators have identified remains of 184 people who were aboard American Airlines Flight 77 or inside the Pentagon, including those of the five hijackers, but they say it is impossible to match what is left with the five missing people.