WASHINGTON — On Thursday, Sen. Ron Johnson (R-Wis.) sent a letter to Secretary of Defense Lloyd Austin demanding responses to his Oct. 12, 2021 and Dec. 15, 2021 letters on the Department of Defense’s (DoD) COVID-19 vaccine mandate. To date, DoD has failed to respond to the senator’s questions including requests for information on the vaccination status of service members. Recently, Thomas Renz, an attorney representing several DoD whistleblowers, released a 35-page DoD brief that included some of the information the senator previously requested from Sec. Austin. The senator wrote, “This brief, dated January 12, 2022, appeared to contain data that I had requested from you including information