Looks mostly like spam, system messages, and gibberish.
What am I missing?
The first line has two errors. First, 9/11 was on a Tuesday. Saying it was a Sunday is just foolish, as it happened at the start of a busy workday. Many of us still remember it like it was yesterday. Also, the line says 2011.
Further question - how do we know these intercepts are authentic?
> From 3AM on Sunday September 11, 2011
Every time these get referenced I think about the alert messages from servers[0] that got sent in the seconds after the first plane hit. It's chilling and makes it all very real for me.
[0] https://news.ycombinator.com/item?id=4504035