Emily Entwistle, medical assistant for Allegheny Health Network, left, prepares swatches as Nickole Nesby, mayor of Duquesne, right, reacts after experiencing a COVID-19 test at a Allegheny Health Network (AHN) mobile clinic, Friday, May 29, 2020, in Duquesne. AHN’s mobile COVID-19 testing unit is part of an initiative to bring testing to underserved communities. The mobile test site has previously been set up in Homewood and the Hill District. (Michael M. Santiago/Post-Gazette)