Question: Out of Central Nebraska Regional Airport and Chippewa County International Airport, which one is more west in the USA?
Context: Central Nebraska Regional Airport (IATA: GRI, ICAO: KGRI, FAA LID: GRI) is three miles northeast of Grand Island, in Hall County, Nebraska.  It is owned by the Hall County Airport Authority.  The airport sees two airlines, subsidized by the Essential Air Service program. Holcombe Flowage is a reservoir on the Chippewa River in Chippewa County and Rusk County, Wisconsin.  The dam stands between the towns of Birch Creek and Lake Holcombe, just west of the settlement of Holcombe, Wisconsin, in Chippewa County, where most of the reservoir lies.  A small part of the reservoir also extends northward into the Town of Willard in Rusk County. Chippewa Valley Regional Airport (IATA: KEAU, ICAO: EAU) is a public use airport in Chippewa County, Wisconsin, United States.  The airport is owned by Eau Claire county and is located three nautical miles (6 km) north of the central business district of the city of Eau Claire, Wisconsin. Chippewa County International Airport (IATA: CIU, ICAO: KCIU, FAA LID: CIU) is a public use airport in Chippewa County, Michigan, United States.  It is located 15 nautical miles (17 mi, 28 km) south of the central business district of Sault Ste. Marie, Michigan.  The airport is owned by the Chippewa County Economic Development Corporation.  It was formerly the Kincheloe Air Force Base. Casper–Natrona County International Airport (IATA: CPR, ICAO: KCPR, FAA LID: CPR) is 7 mi northwest of Casper, in Natrona County, Wyoming.  Before December 19, 2007 the airport was called Natrona County International Airport. KOLN, virtual and VHF digital channel 10, is the CBS-affiliated television station licensed to Lincoln, Nebraska, United States.  Owned by Gray Television, KOLN serves a large swath of southeast and central Nebraska through a large network of translator stations.  The station also operates a full-power semi-satellite, KGIN (virtual and VHF digital channel 11) in Grand Island, which serves the central portion of the market; KOLN and KGIN's on-air branding of 10/11 represents these two full-powered signals.  Combined, the two stations serve one of the largest coverage areas in the United States, stretching across 42 counties in southern and central Nebraska—almost two-thirds of the state's land mass—and an additional four counties in Kansas.  The station's studios are located on North 40th Street in Lincoln, with a central Nebraska bureau located on North Locust Street in Grand Island.  KOLN's transmitter is southeast of Goehner, while KGIN's transmitter is near Heartwell. Western Nebraska Regional Airport (IATA: BFF, ICAO: KBFF, FAA LID: BFF) (William B. Heilig Field) is three miles east of Scottsbluff, in Scotts Bluff County, Nebraska.  The airport is owned by the Airport Authority of Scotts Bluff County.  It sees one passenger airline, subsidized by the Essential Air Service program. Pensacola International Airport (IATA: PNS, ICAO: KPNS, FAA LID: PNS) , formerly Pensacola Gulf Coast Regional Airport and Pensacola Regional Airport (Hagler Field), is a public use airport three nautical miles (6 km) northeast of the central business district of Pensacola, in Escambia County, Florida, United States.  It is owned by the City of Pensacola.  Despite the name, this airport does not offer direct international flights.  This airport is one of the five major airports in North Florida, others being: Northwest Florida Beaches International Airport, Destin-Fort Walton Beach Airport Tallahassee International Airport, and Jacksonville International Airport. Grand Island Army Airfield (IATA: GRI, ICAO: KGRI, FAA LID: GRI) was a United States Army Air Forces airfield which operated from 1942 to 1946.  After its closure, the base was reopened as Central Nebraska Regional Airport. M-80 is a state trunkline highway in the Upper Peninsula of the US state of Michigan.  It runs from Kinross to M-129 near Donaldson.  The highway serves the site of the former Kincheloe Air Force Base and the current Chippewa County International Airport.  The designation has been used twice before on roads in the Lower Peninsula in the 1910s through 1930s while the current usage dates back to the mid-1990s.
Answer: Central Nebraska Regional Airport