Question: What country does Mesquite Airport and Clark County, Nevada have in common?

Context paragraphs:
Clark County Fire Department (Nevada): The Clark County Fire Department (CCFD) provides fire protection and emergency medical services for the unincorporated areas of Clark County, Nevada.  The cities of Las Vegas, Boulder City, North Las Vegas, Henderson and Mesquite each have their own fire departments, but emergency management is provided by the county government.

Henderson Executive Airport: Henderson Executive Airport (IATA: HSH, ICAO: KHND, FAA LID: HND) is a public airport located 11 NM south of the central business district of Las Vegas, in Clark County, Nevada, United States.  The airport is owned by Clark County and operated by the Clark County Department of Aviation.  According to the FAA's National Plan of Integrated Airport Systems for 2009-2013, it is categorized as a "reliever airport".  It was originally known as Sky Harbor Airport, but was renamed in 1996 when it was purchased by Clark County to be used as a reliever airport for McCarran International Airport.

Clark County School District: The Clark County School District, as of 2014 , is the fifth-largest school district in the United States.  It serves all of Clark County, Nevada, including the cities of Las Vegas, Henderson, North Las Vegas, Boulder City, and Mesquite; as well as the census-designated places of Laughlin, Blue Diamond, Logandale, Bunkerville, Goodsprings, Indian Springs, Mount Charleston, Moapa, Searchlight, and Sandy Valley.  The district is divided into seven regions and, in addition to the general schools, it also operates 25 alternative schools and programs.  The district has limited involvement with charter schools, and with the exception of providing some bus service, does not have any involvement with the private schools in the county.

Clark County, Nevada: Clark County is a county in the U.S. state of Nevada.  As of the 2010 census, the population was 1,951,269, with an estimated population of 2,114,801 in 2015.  It is by far the most populous county in Nevada, accounting more than two-thirds of its residents.  Las Vegas, Nevada's most populous city, has been the county seat since the county was established.

Sandy Valley, Nevada: Sandy Valley is an unincorporated community in the Mesquite Valley in west-central Clark County, Nevada, United States.  Sandy Valley has a variant name of Sandy, Nevada.  The population was 2,051 at the 2010 census.  Sandy Valley is bordered on the East by the southern extension of the Spring Mountains and on the west by the California state line.  Sandy Valley began in the 19th century as the five mining communities of Kingston, Sandy, Ripley, Mesquite, and Platina.  It is roughly a forty-five mile drive from Las Vegas.

RTC Transit: RTC Transit is the name of the bus system in the Las Vegas metropolitan area of Clark County, Nevada.  It is a subsidiary of the Regional Transportation Commission of Southern Nevada.  While it services most of Clark County with regularly scheduled routes, most of the service is in the immediate Las Vegas Valley; outlying places such as Mesquite and Laughlin provide transit services to their residents by way of the Southern Nevada Transit Coalition, which uses several vehicles acquired from RTC Transit.

Mesquite Valley: Mesquite Valley is a valley in Clark County, Nevada and Inyo County and San Bernardino County, California.  Mesquite is an endorheic basin with Mesquite Lake at is lowest point at an elevation of 2,536 feet / 773 meters.  This valley trends northwest and southeast with a head at to the southeast near State Line Pass and another head at at the southwestern end of Pahrump Valley, at an elevation of 2,808 feet / 856 meters, between the Kingston Range and Black Butte to the northwest.  It is bounded on the northeast by the Spring Mountains, by the Mesquite Mountains to the southwest and the Clark Mountains to the southeast.

Clark County Department of Aviation: The Clark County Department of Aviation is a part of the government of Clark County, Nevada, United States.  McCarran International Airport, the main commercial airport, and the five general aviation facilities in the Clark County Airport System are owned by Clark County, Nevada and operated under the policy direction of the Board of County Commissioners, the authority of the County Manager and the management of the Director and Deputy Director of Aviation.

Joe Hardy (politician): Joseph "Joe" Paul Hardy (born May 15, 1949) is a Republican member of the Nevada Senate, representing District 12.  Hardy was first elected to the Senate in 2010 when, before redistricting and a change in the nomenclature of the districts, he represented Clark County Number 12.  His district represents rural areas of southeast Clark County including the communities of Boulder City, Laughlin, Searchlight, Henderson, Overton, Bunkerville, Mesquite, as well as Nellis Air Force Base, Lake Mead, and Valley of Fire State Park.  Hardy previously represented Clark County District 20 from 2002 to 2010.

Mesquite Airport: Mesquite Airport (ICAO: 67L) is a public use airport located two nautical miles (4 km) north of the central business district of Mesquite, in Clark County, Nevada, United States.  It is owned by the City of Mesquite.

Supporting paragraphs: Mesquite Airport Clark County, Nevada
Answer: United States