hi there,
http://911.wikileaks.org is running a 24h pager data stream 'releasing over half a million US national text pager intercepts. The intercepts cover a 24 hour period surrounding the September 11, 2001 attacks in New York and Washington.' (From 3AM on Wednesday November 25, 2009, until 3AM the following day (US east coast time)).
i started a parser program that would take the data and parse it into single message, counting appearances of pager numbers, etc.
since the data is only available for 24h, maybe someone wants to build up on what i have so far.
sketch: http://www.sojamo.de/tmp/txt_911_a.zip
the sketch includes a data folder with a text file called 'msgs.txt'. to add new data to this file, go to http://911.wikileaks.org/files/index.html and copy paste the content of available time-index text files at the end of 'msgs.txt' and run the sketch, use arrow keys to go back and forth between available messages. further details are included in the sketch as comments.

best,
andreas