I posted a thread in civil aviation about the newest terror warning of a possible hijack toward late summer, but this part is more relevant here. You can now expect people with cameras to come under more scrutiny because of this quote from the warning:
"the hijackers may attempt to use common items carried by travelers, such as cameras, modified as weapons."
Well you know, if you hollow out that big long lens..............
Seriously, if any such thing should happen I think the noose will be pulled tight on us and our hobby.