I remember hearing something similar in late 2001.
Incidents similar to this happen every single day and many of them are NOT innocent or coincidental. The dry runs have been happening regularly since (and obviously before) 9/11 and everyone needs to remain alert.
Whether the State Department will take any action or change any behavior is another matter, but we can certainly handle these situations where we find them.
I know what I'd have done with these two "cocky" Saudi nationals and yeah it might get me a little friction with the locals but what's worse? A bomb on a local school bus?
Cheers,
Lloyd