Pinal Air Park.Christian Petersen/Getty ImagesPinal Air Park in Arizona is one of the largest aircraft storage facilities in the world.The multimillion-dollar business boomed during the pandemic as airlines grounded hundreds of jets.The airpark is also a hub for maintenance and reconfiguring jets when they get a new operator.There are approximately 8,000 "end-of-life retired aircraft" sitting in deserts, jungles, and storage yards across the glo…