Troy McKinley, organizer of the Minnesota Prepper Expo, poses for a portrait with the cart he affixed with skeletons at the Minnesota Prepper Expo at the Morrison County Fairgrounds in Little Falls, ...

Outdoor safety and camping gear for sale (left) at the Great Lakes Emergency Preparedness Expo in Imlay City, Mich., on Sept. 14; an attendee (right) looks at safety gear and other equipment for sale ...

IMLAY CITY, Mich. — Jerry Katich says he’s “locked and loaded.” His home in a suburb of Flint, Michigan, is equipped with a generator. His cars are packed with first-aid kits, light sources and heat ...