The Grand Canyon Skywalk is a horseshoe-shaped cantilever bridge with a glass walkway in Arizona near the Colorado River on the edge of a side canyon in the Grand Canyon West area of the main canyon.
 USGS topographic maps show the elevation at the Skywalk's location as 4770 ft and the elevation of the Colorado River in the base of the canyon as 1160 ft , and they show that the height of the precisely vertical drop directly under the skywalk is between 500 ft and 800 ft .
Hualapai Airport (FAA LID: 3AZ5) is a private-use airport located eight miles (13 km) northeast of the central business district of Peach Springs, in Coconino County, Arizona, United States.
 The airport has one asphalt paved runway designated 7/25 which measures 4,790 x 30 ft. (1,460 x 9 m).
 It is privately owned by the Hualapai Indian Tribe, who also own the public-use Grand Canyon West Airport located 60 miles (97 km) northwest of Peach Springs.
Grand Canyon Airlines is an 14 CFR Part 135 air carrier headquartered on the grounds of Boulder City Airport, Boulder City, NV.
 Grand Canyon Airlines also has bases at Grand Canyon National Park Airport, AZ, and Page Airport, AZ.
 It operates sightseeing tours and scheduled passenger service over and around the Grand Canyon.
 Its headquarters and main operation center is Grand Canyon National Park Airport and Boulder City Airport, Nevada.
A pre-commissioning unit (PRECOMMUNIT) or (PCU) is used by the United States Navy to describe vessels under construction prior to their official commissioning.
 For example, prior to its commissioning, the aircraft carrier "Gerald R. Ford" (CVN-78) has been described by the Navy as "pre-commissioning unit (PCU) "Gerald R. Ford" ."
 However, "PCU" is only a descriptive term and is not a prefix or a part of the ship's official name.
 Until they are commissioned, U.S. Navy vessels are officially identified by their given name and hull number only with no prefix, such as "Gerald R. Ford" (CVN-78).
Gerald R. Ford International Airport (IATA: GRR, ICAO: KGRR, FAA LID: GRR) is a commercial airport in Cascade Township approximately 13 mi southeast of Grand Rapids, Michigan.
 The facility is owned by the Kent County Board of Commissioners and managed by an independent authority.
 The Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021 categorized it as a small hub primary commercial service facility.
The Shivwits Plateau is a large plateau in northwest Arizona, and in the northwest of the Grand Canyon region.
 Just like the Kaibab Plateau in the east Grand Canyon forces the course of the Colorado River encircling it, the Shivwits Plateau is the major course changer of the Colorado in west Grand Canyon.
 The Colorado River goes due-south on the east perimeter of the plateau, goes west, then northwest to its outfall at Lake Mead.
 The southwest of the plateau borders the Colorado, but a lower elevation section is directly riverside; it is lower elevation hills and small canyons, called Sanup Plateau, and bordering the section of the Colorado called the Lower Granite Gorge.
 (The Lower Granite Gorge starts on the east side at the start of its due-south excursion around Shivwits Plateau.)
Grand Canyon Caverns Airport (IATA: PGS, FAA LID: L37) is a public-use airport located nine miles (14 km) east of the central business district of Peach Springs, in Coconino County, Arizona, United States.
 The airport covers an area of 800 acre and contains one runway designated 5/23 with a gravel surface measuring 5,100 x 45 ft (1,554 x 14 m).
 It is privately owned by Grand Canyon Caverns & Inn LLC.
Branson West Airport, also known as Branson West Municipal Airport, (ICAO: KFWB, FAA LID: FWB) is a city-owned, public-use airport located two nautical miles (3.7 km) west of the central business district of the City of Branson West, in Stone County, Missouri, United States.
 The airport is also known as Emerson Field, named for Robert Emerson, an aviator who relinquished the air rights of his nearby airfield so the Branson West airport could operate safely and obtain a federal grant.
Grand Canyon National Park Airport (IATA: GCN, ICAO: KGCN, FAA LID: GCN) is a state-owned public-use airport located in Tusayan, a CDP in unincorporated Coconino County, Arizona, United States.
 It is near Grand Canyon National Park, seven miles (11 km) from the South Rim of the Grand Canyon.
 The airport is primarily used for scenic tours and charter flights, but there is scheduled commercial service.
Grand Canyon West Airport (IATA: GCW, FAA LID: 1G4) is a public airport 60 miles (97 km) northwest of Peach Springs, in Mohave County, Arizona.
 It is owned and operated by the Hualapai tribe and is on the Hualapai Indian Reservation.

Question: Which airport is closer to the city, Gerald R. Ford International Airport or Grand Canyon West Airport?
Answer: Gerald R. Ford International Airport