The “exotic gear” is all available on the internet if you look around. The 100 round mag tells me he did NOT have help, or the helpers would have steered him away from those jamamatics. The booby traps they “never saw before” were original to him, a high-IQ science student. To be expected from a guy with no training or “help” in demolitions. The only things not readily available on the internet are CS grenades, we’ll have to wait to see how he found or created them. Everything else, you could have ordered and shipped to your house UPS or FedEx in three days.
This is the one thing I keep coming back to. Were they actually CS grenades, or were they novelty smoke grenades (big, plastic, tons of smoke, and shaped like a big pineapple grenade from WWII). No fuse, pull a string and plenty of smoke for a theater - the kiddies got one for Independence day. In an enclosed space, it would have worked very well.