(Sue Ogrocki | AP file photo) Workers carry boxes at Oklahoma's Strategic National Stockpile warehouse in Oklahoma City on April 7, 2020. States are spending billions of dollars stocking up on medical supplies like masks and breathing machines during the coronavirus pandemic. An Associated Press survey of all 50 states found a hodgepodge of public information about the purchase of masks, gloves, gowns and other hard-to-get equipment for medical and emergency workers.