Maria Medina stands next to her empty oxygen tank as she waits for the refill shop to open in Callao, Peru, Monday, Jan. 25, 2021, amid the COVID-19 pandemic. Some said they arrived to get in line on Sunday after the store closed in order to be first in line on Monday, while others missed out on Sunday's allotments of refills, approximately 80 tanks, and stayed a second day to wait. (AP Photo/Martin Mejia)