Mako anticipated that at least one of the hunters would ask him rather than assuming the obvious. He turned to face the taller Hunter, his visor masking any hint of emotion. "I'm doing my job." he said nonchalantly. "It just so happens that I need her alive to complete it... for now." The mercenary emphasized that last part. He trusted Vex to follow through the charade, and hoped that it would be enough to convince the Hunters and get them off his back.