Jack goes over and over in his mind about how she could have possibly escaped. Had he not made the seal airtight? What sort of powers does she have, anyway? He knows at least from spending his day watching her that cameras would be no use in catching her, so he would have to rely on his own senses and pray that his shot would be good enough to slow her down. He can't have her getting out. Not when she could hurt someone like this. Perhaps if he can stall her until daybreak...

Jack turns and heads straight for the cell block, pausing almost immediately and raising his weapon, aiming for the intruder's head. "Freeze!" He calls. "Place your weapons on the floor and your hands into the air!" The darkness inside the facility makes it difficult to see who might be there. "Who are you? How did you get in here?"