Doug Preszler wasn’t thinking about risk when he took a cashier job at a regional supermarket in eastern Iowa. But five months in, he has found himself at the forefront of a global crisis with little training or protection — save for the pocket-size bottle of hand sanitizer and Ziploc full of disposable gloves he brings from home each day. The 51-year-old has told himself not to live in fear yet concedes he increasingly is. Even the most routine tasks are fraught: Accepting bills and giving change scare him the most, Preszler says. And he has run through so much hand […]