So lets say you get fed up with your team mates on HUNT,
to initiate a double cross woud be to secure intel and deliver it to stargazer device or some kind of coms device and exfiltrate on a secret vehicle somewhere on each map.
But once you turn over intel to Stargazer, you become kill-able by other FT members or Predator.
Youll get your own cinamatic. But i think the only way to make this fair game is if you start the initiation of double cross early like in the first objective. Otherwise, everyone will be doing it for shits and giggles.