"[...] aimed at putting travelers' minds at ease [...]"
No Tim, it's aimed at reminding travelers that there are Bad People out there that will Kill You if you don't let the government do whatever they want, For Your Safety. And also Think Of The Children (unless an agent is groping said children at the time, then you should think about The Flag for a couple of minutes).
The money was used as it was supposed too, I guess. The problem is that TSA has already managed to convince Congress that they should have all the money, so they just can't find anywhere to actually spend it anymore.
Since the call was "ongoing" when he called the police, odds are they got an earful of murderin'-plans. ;-)
And no, it's not hearsay. Hearsay is if you or I would testify, the man is most definitely allowed to testify about what he heard. True, it's not as good as an actual recording, but it should be enough.
There's a pretty big difference between "oh, that's hot" and "OH MY GOD I'M ON FIRE!" hot. Or, in other words, if my coffee can give me second degrees burns, then HELL YES they should need to put a nice warning label on it, something along the lines of "will kill you if ingested directly".
Something that always baffles me when people talk about the need to balance "security" with civil liberties is that they don't seem to realize that those civil liberties are what secures us (the people) against the government! Or at least, should do that.
Basically they are arguing for a "balance" between real security for the people (from the government) and security against an imaginary foe (terrorist, piracy or whatever it is this week) that have never had the power to do actual long-lasting harm against us.
Old McDonalds field? Seriously, I think the "field" here is "being human". While the actual technology behind it may be hella complex, the idea is brutually simple and straightforward, and since he claims he owns the IDEA (which I was of the impression you couldn't, but maybe that's just copyright?), it's obvious.