Intro to the ALIEN RPG part three: Stress and Panic! 

Coup de grace has the "-ce" pronounced "-s." GRAHS. People tend to mispronounce this because they know the origin is French, but they don't understand that silent French consonants aren't generally followed by an "e." For some reason, the fact of this pronunciation tends to trigger people, so please, folks, take a deep breath and look it up before you gain a Stress and risk Panic.

If person 1 panics and screams and person 2 hears it and panics and flees; if person 1 sees person 2 flee does this trigger a another panic roll for person 1? or you can you only panic once per round?

Hmm, so somebody screams and everyone's stress level goes up, causing someone else to scream, etc., etc., ending in a TPK. Not a fan, even if it is highly unlikely. (I've seen way too many 'impossible' results happen because of a series of really bad rolls to be cool with such a rule.) But then, I'm not a big fan of horror anyway, although I'll play such a game if that's what everyone else wants to do. You just have to make a fun character to play, that you aren't too invested in, to have fun. Be well and stay safe!