MANY OF THE HIJACKERS ARE STILL ALIVE.
YES, MANY OF THE HIJACKERS ARE STILL ALIVE.

See for example,

http://www.worldmessenger.20m.com/alive.html
http://news.bbc.co.uk/hi/english/world/middle_east/newsid_1559000/1559151.stm
http://www.mujahideen.fsnet.co.uk/wtc/wtc-hijackers.htm