Compilation of articles regarding U.S. Army Corps of Engineers construction of alternate care sites during the Coronavirus COVID-19 pandemic. An Alternate Care Site (ACS) is a facility that’s temporarily converted for healthcare use during a public health emergency to reduce the burden on hospitals and established medical facilities. The US Army Corps of Engineers (USACE) and the US Department of Health and Human Services (HHS) is working to rapidly construct Alternate Care Sites around the nation.