“The routine is up in the air. You never know what you’re walking into and we are out of basic cleaning supplies [to sell],” said Gary, a Walmart employee in New York who spoke to CNN Business under the condition that his last name be withheld from this article. His coworkers are “tired and frustrated” because they are working at a faster pace than normal and are struggling to meet overwhelming demand from jittery shoppers for groceries and household staples.