Perma-Fix Environmental Services Inc., Oak Ridge, Tennessee, is awarded a $39,998,941 firm-fixed-price contract for maintenance and modernization aboard Ex-McKee (AS-41) during the fiscal 2021 decontamination availability at Norfolk Naval Shipyard. Work will be performed in Portsmouth, Virginia, and expected to be completed by September 2023. Fiscal 2021 operation and maintenance (Navy) funds in the amount of $39,998,941 will be obligated at the time of award and will expire at the end of the current fiscal year. This contract was competitively procured. Norfolk Naval Shipyard, Portsmouth, Virginia, is the contracting activity (N42158-21-C-0004).