FILE - In this June 30, 2016 file photo firefighters respond to a wildfire near the Morningside Heights neighborhood near Table Rock in east Boise, Idaho. With a potential ferocious wildfire season ready to ignite across the western U.S., the push is on to persuade state and federal wildland firefighters to get vaccinated against COVID-19. Republican Idaho Gov. Brad Little said Tuesday, May 18, 2021, that lives could be lost if frontline firefighters get sidelined with the illness. (Joe Jaszewski/Idaho Statesman via AP, File)

FILE - In this June 30, 2016 file photo firefighters respond to a wildfire near the Morningside Heights neighborhood near Table Rock in east Boise, Idaho. With a potential ferocious wildfire season ready to ignite across the western U.S., the push is on to persuade state and federal wildland firefighters to get vaccinated against COVID-19. Republican Idaho Gov. Brad Little said Tuesday, May 18, 2021, that lives could be lost if frontline firefighters get sidelined with the illness. (Joe Jaszewski/Idaho Statesman via AP, File)