FILE - Signs display COVID-19 information before the game between the Kansas Jayhawks and the Coastal Carolina Chanticleers outside of Memorial Stadium on September 12, 2020 in Lawrence, Kansas. (Brian Davidson/Getty Images)RELATED: US economy will return to pre-pandemic levels by second-half of 2021, experts predictAdvertisementThe staff shortages have forced people like Eric Lewallen, a Gulf War veteran and alfalfa farmer who moonlights as a radiology technician, to mount a last line of defense.