1) Why *wouldn't* the customs folks have guns? It's not about matching the arms of your adversary, it's a tool to do a job. Just because there is little to no chance of someone pulling a gun on them does not mean they may have to resort to deadly force at some point - requiring a gun. If some guy is found to have a bag of coke, and he whips out a knife and starts threatening to stab anyone who stands in his way, he needs to be shot. No shooting in the leg stuff either - right for the center of mass - killshot. That's how it works.

2) It is annoying *if* the people are in your way. If they are not, who cares? I've had days where I was so tired I just couldn't take another step -the moving conveyor is a helpful tool to make these times easier. I'm an able bodied man but I'd hope nobody would pass judgement on me for this. After all, I could be tired - maybe I have a bad ankle you can't see (I do actually), maybe my shoes are slipping and giving me a blister, maybe, maybe..... maybe anything. Who cares? If they are blocking the conveyor, they are rude ignoramus' and should be politely told to move it, but if they are on their own side - so what?