The plan: Alec needs to close the hatch, but also get the Berg up in the air. Thankfully, he used to be a pilot.
Unfortunately, Mark can hear voices getting closer; that means he'll probably have to fight them off so that Alec can do his thing.
Two people jump onto the Berg's ramp; a man and a woman.
It dawns on Mark that these two people were the Berg's pilots.
The pilots call him a spy, and an uncontrollable rage overcomes Mark. He doesn't understand it, but something clicks inside of him, telling him these two people will not make it on board.
Mark approaches the woman and kicks her, sending her flying backwards. Then he grabs the man, and says, "Your turn" (41.18).