I like that. The real acronym is:
"Phased Array Tracking Radar to Intercept Of Target"
No missile system or product can be considered successful without a
catchy acronym, or clever name. I've heard it called "Pat's Riot" or
"Parts Riot".
The Wikipedia article covers the accuracy issues. Not great accuracy
(or success rate), but good enough for Poland if used in quantity.
<
http://en.wikipedia.org/wiki/MIM-104_Patriot#Success_rate_vs._accuracy>
I can add a few comical anecdotes and details as to what happened in
Israel, but I would rather not get into that discussion. Let's just
say that there were some major screwups.
Caveat Emptor. I'm sure the Polish know about the Patriot missile
systems batting average. My guess(tm) is that Poland and others are
not so much interested in an anti-missile defense as in a manned
assault by Russian troop carrying helicopters and transport. Russia
would be nuts to devastate Poland, Austria, Turkey and others with a
missle attack. More likely, they'll do a repeate performance of what
they're doing to their own dissident provinces.