Col. Robert Shelton, 100th Operations Group commander, and Capt. Zachary Overbey, 100th OG executive officer, prep a KC-135 Stratotanker to fly prior to a flight supporting the 76th anniversary commemoration of D-Day at RAF Mildenhall, England, June 6, 2020. D-Day reflects the strength of enduring relationships and proven partnerships. This historic relationship has allowed U.S. forces to remain ready and have the strategic access in Europe to accomplish high-priority missions with our European allies and partners.