Be patient with him. I can’t speak for everyone, but I had a rough time transitioning back. I was walking past some construction and a worker fired a nailgun and I reached for a weapon that wasn’t there. I still get nervous around fireworks, and I will take a 15 minute detour to avoid driving over bridges. Please, for his and your sake, be patient with him.
For me , it was trains! I lived near a tire plant and when the box cars coupled ,it sounded like a mortar firing. Manys’ the night I woke up in a sweat after hearing that noise. Good news ;it goes away in time.
It’s just so tasty, and really helps keep things regular!
People are people, I don’t really mind answering the question all the time. Better to be open about it than become one of those grumpy people who get offended over every little damn thing.