Which air-line flies through Fort  Collins - Loveland Municipal Airport and employees 3,700 employees?
Fort Collins–Loveland Municipal Airport Northern Colorado Regional Airport (IATA: FNL, ICAO: KFNL, FAA LID: FNL) is a public use airport located nine nautical miles (10 mi, 17 km) southeast of the central business district of Fort Collins and northeast of Loveland, both cities in Larimer County, Colorado, United States. It is mostly used for general aviation; scheduled passenger jet service operated by Allegiant Air nonstop to Las Vegas was discontinued in October 2012. The airport supports commercial flights non-stop to Chicago Rockford International Airport by Elite Airways.
507th Air Refueling Wing The 507th Air Refueling Wing is a reserve component of the United States Air Force. It is assigned to Fourth Air Force of Air Force Reserve Command, stationed at Tinker Air Force Base, Oklahoma with elements at Altus Air Force Base and Will Rogers World Airport. If mobilized, the wing is gained by Air Mobility Command. It performs air refueling and airlift and employs approximately 1100 men and women. The wing also provides the full-time technicians and support personnel for all reserve units stationed at Tinker.