Yes, tools will be checked. Always a risk of theft but so far it hasn't been an issue and he's been taking them all about for several months now.
I didn't even consider he needed a visa for work there ... I'll have him check with his company or the GC. He does have a valid passport at least.
Thanks for the info, YVR Cockroach. We were just there in late September for several days and had a wonderful time ... I'd love to go back post Olympics (once all the craziness has passed).