The air-to-air refueling market involves the transfer of aviation fuel from one aircraft (the tanker) to another (the receiver) during flight. This process, also known as aerial refueling, extends the operational range of military aircraft, allowing them to remain airborne for longer periods, travel greater distances, and perform extended missions without the need for landing. The market includes a variety of aircraft and refueling systems, including probe-and-drogue and flying boom methods, with applications in both military and limited civilian sectors.