Air Support is one of Arizona s premier cartage and distribution companies. Its 16-door, 36,000-square-foot facility in Phoenix has more than 40 tractor units and 75 uniformed employees. The company also operates a three-door, 13,000-square-foot facility in Tucson, Ariz., that has 12 units and 20 employees. The Phoenix facility is located in close proximity to Sky Harbor International Airport, while the Tucson location is close to Tucson International Airport. Air Support is affiliated with Straightline Transportation.