Is your family ready for a “Zombie Apocalypse”? Have you created a disaster plan for dealing with a slow-moving (or, depending on your viewing habits, fast-moving) mass of undead, brain-eating, B-movie extras? If an unstoppable horde attacks, who’s in charge of gathering supplies? Who rounds up the family dog? Who rescues critical reference material? The Navy wants you to be ready — if not for zombies, then for other, less-fictional disasters like hurricanes or tornadoes. And it’s hoping a contest prompting Navy kids ages 5 to 17 to prepare an “escape plan” will pass that message of preparedness throughout the…