Recovery One (4) - S0.E43

Washington and South move to confront the enemy, but South shoots Washington in the back, leaving his fate ambiguous. South then tricks their attacker and steals the ship the latter used to follow them, contacting her command post and informing them of the success of their plan to double-cross Washington. She then tells them since she has Delta she will not be returning to command, and flies off in a hijacked ship. The command post warns South that they will find her if she doesn't come back, but South is not fazed, ending the transmission (and the episode) by saying, "It's not you I'm worried about."