Of the unobligated balances available from amounts made available pursuant to authorizations of appropriations contained in Public Law 116–283, the William M. (Mac) Thornberry National Defense Authorization Act for Fiscal Year 2021, $9,626,500,000 is hereby rescinded. This recission shall apply on a pro rata basis among the accounts for which amounts were authorized other than those for the Defense Health Program, military personnel, and persons appointed into the civil service as defined in section 2101 of title 5, United States Code.