The 15th Air Transport Wing is a wing in the Air Component of the Belgian Armed Forces. The 15th Wing's motto is TENACITY. A Sioux Indian chief completes the emblem. The wing comprises two operational squadrons, the 21st Squadron and the 20th Squadron, and a Training & Conversion Unit. 21st Squadron is also known as the Liaison and Long-Haul Flight. 20th Squadron operates 7 Airbus A400M Atlas, which replaced the Lockheed C-130 Hercules military transport aircraft in 2021. It consists of about 72 crewmembers, making it one of the largest units in the Belgian Air Component.