TINKER AIR FORCE BASE, Okla. -- Reps. Kevin Hern and Markwayne Mullin along with congressional staffers from across Oklahoma joined the 507th Air Refueling Wing here on a orientation flight, Aug. 15, 2019. The congressional delegation visited the largest Air Force Reserve flying unit in the state to enhance their relationship with more than 1,100 Reserve Citizen Airmen constituents and to learn about the wing's capabilities and the greater Reserve mission.