Mafia 79. 1/0

Regarding the four people: Morning's profile says "Make war, not love" -> "Make love, not war" -> John Lennon -> The Beatles -> "the magnificent four."

Here, it's more likely a reference to four Mafia members.

Regarding the clue, it could be:
1) a check
2) an automatic weapon or a pistol. For some reason, three have automatic weapons, and the last one has a pistol. Although this is too vague.
3) "slowly and casually"
I don't even know what else.