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.
DuBois Regional Airport DuBois Regional Airport (IATA: DUJ, ICAO: KDUJ, FAA LID: DUJ) , formerly known as DuBois–Jefferson County Airport, is a public use airport in Jefferson County, Pennsylvania, United States. It is located seven nautical miles (13 km) northwest of the central business district of Dubois, a city in Clearfield County. The airport is on Pennsylvania Route 830 in Washington Township. It is owned and operated by the Clearfield-Jefferson Counties Regional Airport Authority, based at the airport. It is mostly used for general aviation, but has scheduled service on one airline, Southern Airways Expressway. Service is subsidized by the Essential Air Service program.