I was in Desert Storm in 1991 and we had to leave the country of Saudi Arabia abruptly because our singer "borrowed" a Humvee from a base to get back to Khobar Towers, where we were staying.
The Saudis saw the "hippie loan" as "theft" and they wanted his right hand something fierce so it was "leave by sundown or come Friday you'll forever be a lefty".
So there it was. We almost all got a deportation stamp, and that could have had detrimental effects on all of our careers, especially post 9/11.
So if someone acts like a lunatic either as their "stage persona" or that's just the way they are 24/7 then be very concerned to which places you travel together. No matter what the industry. Unhinged behavior is a huge red flag in this business.