Retail, grocery employees are nervous as co-workers, customers go maskless. ‘You wonder, do they really have their COVID shot?’

Bill Easton, a checker at a Safeway grocery store, is shown May 19, 2021, at a shopping center in Aurora, Colorado. Easton is fully vaccinated but is concerned about risks posed as retailers change their mask-wearing policies for customers. (David Zalubowski/AP)