Of these two U.S airports, Muskegon County Airport and Fresno Yosemite International Airport, which restored service to Chicago through the Essential Air Service?
Fresno Yosemite International Airport: Fresno Yosemite International Airport (IATA: FAT, ICAO: KFAT, FAA LID: FAT) , formerly Fresno Air Terminal, is a joint civil-military public airport in eastern Fresno, in Fresno County, California. Muskegon County Airport: Muskegon County Airport (IATA: MKG, ICAO: KMKG, FAA LID: MKG) is a county owned, public use airport in Muskegon County, Michigan, United States. Muskegon County Airport:  The airport and the county of Muskegon restored service to Chicago through the Essential Air Service program.
Muskegon County Airport