McClane and Grant really seem to hit it off at first, the two help each other out multiple times over the film's duration and seem to hold a mutual admiration for one another. However, when McClane isn't present, we see Maj. Grant and his men joking around with a new recruit before suddenly slitting his throat, revealing that the Major and his loyal crew are in fact aligned with the terrorists. It's not often that John manages to make friends with a figure of authority, which is why it's particularly disheartening when one of those allies turns out to be a greedy opportunist with a penchant for betrayal.