Question: Of these two U.S airports, Muskegon County Airport and Fresno Yosemite International Airport, which restored service to Chicago through the Essential Air Service?
Context: Quincy Regional Airport (IATA: UIN, ICAO: KUIN, FAA LID: UIN) (Baldwin Field) is a city owned public airport 12 miles east of Quincy, a city in Adams County, Illinois.  It is used for general aviation but also sees American Airlines partner Cape Air with subsidized Essential Air Service flights to Lambert-St.  Louis International Airport, a service which is subsidized by the federal government's Essential Air Service program at a cost of $1,956,856 (per year). KGPE, virtual channel 47 (UHF digital channel 34), is a CBS-affiliated television station located in Fresno, California, United States.  The station is owned by Nexstar Media Group, as part of a duopoly with NBC affiliate KSEE-TV (channel 24).  The two stations share studio facilities located on McKinley Avenue in East Fresno (several blocks from Fresno Yosemite International Airport); KSEE maintains transmitter facilities located on Bear Mountain (near Meadow Lakes). KMPH-TV, virtual channel 26 (UHF digital channel 28), is a Fox-affiliated television station serving Fresno, California, United States that is licensed to Visalia.  The station is owned by the Sinclair Broadcast Group as part of a duopoly with CW affiliate KFRE-TV (channel 59).  The two stations share studio facilities located on East McKinley Avenue in eastern Fresno (one mile southwest of Fresno Yosemite International Airport); KMPH maintains transmitter facilities located on Big Baldy Mountain in northwestern Tulare County. Muskegon County Airport (IATA: MKG, ICAO: KMKG, FAA LID: MKG) is a county owned, public use airport in Muskegon County, Michigan, United States.  The airport is located four nautical miles (5 mi, 7 km) south of the central business district of Muskegon, Michigan, in Norton Shores.  It is mostly used for general aviation but is also served by United Express flying CRJ-200 regional jets to its Chicago-O'Hare hub.  The airport and the county of Muskegon restored service to Chicago through the Essential Air Service program. The Fresno Air Attack Base was established in 1955 By the US Forest Service, Sierra National Forest and is located at the Fresno Yosemite International Airport.  The US Forest Service leases office space to the California Department of Forestry and Fire Protection's (CAL FIRE) Fresno/Kings Unit.  In 1994, it was completely rebuilt to become a model modern AirTanker Base which includes a modern interagency communication/command center. 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.  Located approximately 64 miles south of Yosemite National Park on California State Route 41, it is the closest airfield to the Park with scheduled passenger airline jet service.  Situated near California State Route 168 and California State Route 180, the airport covers 1728 acres .  It maintains two runways and one helipad.  Fresno Yosemite International is the air transport center for the San Joaquin Valley, with flights to several airline hubs in the western United States.  International flights to Mexico are available through Aeroméxico and Volaris.  The airport is also home to the Fresno Air National Guard Base and the 144th Fighter Wing (144 FW) of the California Air National Guard. KSEE, virtual channel 24 (UHF digital channel 38), is an NBC-affiliated television station located in Fresno, California, United States.  The station is owned by the Nexstar Media Group, as part of a duopoly with CBS affiliate KGPE (channel 47).  The two stations share studio facilities located on East McKinley Avenue in East Fresno (several blocks from Fresno Yosemite International Airport); KSEE maintains transmitter facilities located on Bear Mountain (near Meadow Lakes). KFRE-TV, virtual channel 59 (UHF digital channel 36), is a CW-affiliated television station serving Fresno, California, United States that is licensed to Sanger.  The station is owned by the Sinclair Broadcast Group as part of a duopoly with Fox affiliate KMPH-TV (channel 26).  The two stations share studio facilities located on McKinley Avenue in eastern Fresno (one mile southwest of Fresno Yosemite International Airport); KFRE maintains transmitter facilities located on Bear Mountain (near Meadow Lakes). The Yosemite Area Regional Transportation System, also known as YARTS, is a public transit bus line based in Merced, California.  YARTS provides scheduled service into popular locations within Merced, Mariposa, Mono, Madera, and Fresno counties, including Yosemite National Park and Fresno Yosemite International Airport. Greenbrier Valley Airport (IATA: KLWB, ICAO: LWB) is a public airport three miles (5 km) north of Lewisburg in Greenbrier County, West Virginia, United States.  It has one runway and is owned by the Greenbrier County Airport Authority.  Silver Airways ("United Express") has scheduled airline flights, subsidized by the Essential Air Service program, to Washington-Dulles International Airport, which replaced Cleveland-Hopkins International Airport in summer 2012.  Silver Airways also flies to Atlanta-Hartsfield International Airport as an independent airline, replacing Delta Connection.
Answer: Muskegon County Airport