Please let me know what you're comfortable with being brought up at the table, in or out of roleplay.
You can list these as general topics (sexual assault, gunfire) or very specific scenarios (I don't like head trauma, especially when caused by blunt objects).
During our Session 0, I'll list these Boundaries, but who brought them up will remain anonymous, unless you volunteer your info at the table (or if you'd like me to, I can).