It’s one thing to prepare to survive an asteroid. It may be another to survive a casting call for “Doomsday Preppers.”

Producers of the show on the National Geographic Channel will be in Blaine on Saturday for the Survival Preppers Expo at the National Sports Center. Times are “0900 - 1800 hrs,” which, in non-survival-speak, is 9 a.m. to 6 p.m.

“Doomsday Preppers” turns the cameras on Americans who are, in its words, “preparing for the end of the world as we know it.” Many local preppers are a little less apocalyptic in describing why they do what they do. Basically, they just want to be prepared for whatever life tosses their way, be it a solar flare that disrupts the power grid or a blizzard that tests their supply of ramen.

In other words, preppers who aspire to TV stardom might consider setting themselves apart, such as past stars like Kellene, the foodie who “doesn’t plan to give up her chocolate lava cake or four-cheese Italian risotto when the end comes,” or Dave, who “can actually send radio signals off of the moon and hear them back on his HAM radio a few minutes later.”

For more information on the expo and the exhibitors, visit Tickets are $10 in advance; $15 at the door. □