Attached should be a flyer for the Air Force MARS 75th Anniversary Special Event and the 12 stations participating.  From the flyer:

"The Air Force Military Auxiliary Radio System (AFMARS) celebrates 75 years of service to United States Military and Civilian government organizations during November 2023. In observance of this milestone, the “Air Force MARS 75 Years” Special Event will include communications on Amateur HF bands (160-6) in the General License portion of the band and in the Technician License portion of 10 meters using SSB, CW and digital modes."