Health officials in Las Vegas are launching a drive-thru coronavirus testing blitz, with help from the federal government and a goal of reaching 60,000 people. Appointments are not required but are encouraged at three “Stop, Swab & Go” sites that opened Monday. They are at the Fiesta hotel-casino in Henderson, Texas Station hotel-casino in North Las Vegas, and Sam Boyd Stadium in southeast Las Vegas. Tests are free and no proof of health insurance or identification is required. The U.S. Department of Health and Human Services is underwriting the testing surge through Sept. 18. The program for virus hot spots has been used in Texas, Louisiana and Florida.