Make detectives start with a loyalty implant

[Dr Zoidcrab]

Heads of staff can't join gangs, it says you have too much responsibility if you try to join.

Loyalty implants don't stop you from being an antag or mindslaved, their only purpose is to reverse the revolutionary brainwashing and protect against it going forward.

Besides i'm pretty sure security officers not being able to be antags and heads of staff not being able to join gangs or be brainwashed by revs is built into the game modes, they don't start implanted themselves.