Dave Walton, an administrator with the Delaware Division

Dave Walton, an administrator with the Delaware Division of Public Health, prepares to check in soldiers and airmen of the Delaware National Guard before the start of a session on contact tracing for COVID-19 at a state training facility in Dover, Delaware, May 11, 2020. Contact tracing is used by public health officials to find and reach out to the contacts of someone testing positive for an infectious disease. Members of Delaware National Guard will be supporting the Division of Public Health's efforts to gather voluntarily provided data from the public to help mitigate the spread of coronavirus. (U.S. Army National Guard photo by Capt. Brendan Mackie)