Refer to revisions released on April 1, 2020 regarding the implementation of OMB Memorandum M-20-17, “Administrative Relief for Recipients and Applicants of Federal Financial Assistance Directly Impacted by (COVID-19) due to Loss of Operations (March 19, 2020). NSF is continually updating guidance and online resources and is  accepting proposals for nonmedical, non-clinical-care RAPID research on coronavirus. Visit https://www.nsf.gov/news/special_reports/coronavirus/.