A U.S. Air Force pilot assigned to the 494th Expeditionary Fighter Squadron conducts a preflight inspection before take off for a fly-by over Doha, Qatar in honor of Qatar National Day, Dec. 18, 2019. Qatar National Day is an annual holiday for Qataris to commemorate their national identity and history, and allows them to remember how their national unity was achieved. This year’s Qatar National Day celebration included a parade featuring massive fire work displays, military aircraft flyovers, and many other demonstrations of national unity. (U.S. Air Force Photo by SSgt Bethany La Ville)