he had a small chain of dental clinics around here. the one i knew of looked like one of those places you go into to get help for your "pain", wink, wink, nudge, nudge. wouldn't doubt the dude is up to some schit.
You have hit on exactly how the feds decide to go after people sometimes.
As for the gun case and not being able to reach the trigger, it’s impossible to say much as to what may or may not have happened without seeing the actual scene. Every year a score or more of hunters are killed with careless gun handling when the trigger snags on something in a boat or a truck or a dog steps on the trigger or some other such nonsense. With firearms the impossible is almost always possible and in a situation where people were packing and in a hurry, I could see a piece of clothing or a sheet or something getting hung up in the case or whatever. Unlikely? Maybe, but likely enough to keep me from convicting a man of murder.