 Why does Gerri kiss Lane?
The humming paragrav-paks embedded beneath his shoulder blades held him motionless above Newyork's three administrative towers. Two black paragrav-boats whirred along the translucent underside of Newyork's anti-missile force-shield, the Shell. Tammany Hall has warned that this man is extremely dangerous. Lane's mailed hand snapped open a pouch at his belt. It shaded the view from his window and re-entered the tower wall just below. A loudspeaker shouted into the room: "Come out of there, Lane, or we'll blast you out." The cannon trundled into the Square on its olive-drab, box-shaped caterpillar mounting and took up a position equidistant from the bases of the three towers. "Lane is holding the Martian Ambassador, Gerri Kin, hostage.
 She pities him.
 She pities him.  She is terrified he'll kill her if she doesn't.  She likes Lane.  He is trying to save her life.