Norwalk is a city in Warren County, with some small portions extending into Polk County, in the U.S. state of Iowa.
 The population was 8,945 at the 2010 census.
 The city is part of the Des Moines–West Des Moines Metropolitan Statistical Area and is located just south of the Des Moines International Airport.
State Route 509 (SR 509) is a 35.17 mi state highway in the U.S. state of Washington, connecting Tacoma in Pierce County to Seattle in King County.
 The highway travels north from Interstate 705 (I-705) in Tacoma to SR 99 south of downtown Seattle.
 It serves cities along the Puget Sound and west of Seattle–Tacoma International Airport in south King County, including Federal Way, Des Moines, and Burien.
 SR 509 is part of the National Highway System and is a limited-access highway near the Port of Tacoma and from Burien to its northern terminus in Seattle.
 Prior to the 1964 highway renumbering, the highway was part of Secondary State Highway 1V (SSH 1V) from Tacoma to Des Moines and SSH 1K from Des Moines to Seattle.
 SR 509 was re-aligned onto the Burien Freeway in 1968 and the Port of Tacoma bypass in 1997, coinciding with the opening of its interchange with I-705 and the cable-stayed 21st Street Bridge.
 Various proposals since 1988 have recommended building a freeway extension of SR 509 within the city of SeaTac, connecting the Burien Freeway to I-5, that remains unbuilt.
University Park Airport (IATA: SCE, ICAO: KUNV, FAA LID: UNV) is a public airport located in Benner Township, Centre County, Pennsylvania.
 The airport serves the towns of State College and Bellefonte, and the surrounding area.
Riverview Park was an amusement park in Des Moines, Iowa, from 1915 to 1978.
 What began in pre-1915 as a zoological garden and trolley destination in an area of Des Moines known as Highland Park would become Riverview Amusement Park, a popular family entertainment oasis in early Iowa history.
 It was built upon an island, accessed via a wooden bridge, by a group of nine local businessmen that were headed up by a Des Moines movie-theater mogul named Abe Frankle.
 In the early years various entertaining events and attractions that made Riverview Park a fondly remembered family get-away included free acts featuring death-defying daredevils and musical band concerts.
 The early amusement rides included in 1923 a new carousel (PTC#65) from the Philadelphia Toboggan Company, whose carousels represented some of the finest examples of hand carved carousel horses in America, and a large Carousel Pavilion building to house it.
 In 1928 a Herschell-Spillman menagerie carousel with intricate hand-carved animals replaced the PTC carousel.
 In 1920 John Miller–designed a figure-eight roller coaster featuring eight full dips that all went to the ground level for the park.
 In 1940, the Riviera Ballroom was added and provided big band dances throughout the 1940s and 1950s and teen dances in the 1960s and 1970s.
 The Riviera Ballroom was inducted into the Iowa Rock and Roll Hall of Fame in 2010.
Des Moines International Airport (IATA: DSM, ICAO: KDSM, FAA LID: DSM) is a civil-military public airport three miles southwest of Des Moines, in Polk County, Iowa, United States.
 It has 19 connections to major airline hubs.
The Des Moines Oak Leafs were a minor league professional ice hockey team from Des Moines, Iowa, playing at Des Moines Ice Arena.
 The Oak Leafs were members of the United States Hockey League from 1961 to 1963, and the International Hockey League from 1963 to 1972.
 After 1972, the team was renamed the Des Moines Capitols.
Des Moines River Locks No. 5 and No. 7, also known as the Bonaparte and Keosauqua Locks, comprise a discontinuous historic site located along the Des Moines River in Van Buren County, Iowa, United States.
 Lock No. 5 is located in a riverfront park in Bonaparte, and lock No. 7 is located near Keosauqua.
 The locks are the only structures that are known to exist for the Des Moines River Improvement Project.
 Steamboats were the primary means of transportation into the interior of Iowa, but the river was only navigable at certain times of the year and that made the shipping season too short and unpredictable.
 In 1846 the Iowa Legislature conceived a plan to build a lock and dam system along the Des Moines River to make it navigable from the Mississippi River to the city of Des Moines.
 These two locks and a third at Bentonsport, non extant, were the only locks of the 28 planned locks and dams that were completed.
 The project ended in 1858 because it was mismanaged, and the Keokuk and Des Moines River Railroad was being developed to cover the same territory at the same time.
 Two dams had also been completed, but they have since been removed.
 Even though the project was never completed, navigation was
The Des Moines Capitols, were a minor league professional ice hockey team in Des Moines, Iowa, playing at the Des Moines Ice Arena.
 They were members of the International Hockey League from 1972 to 1975, and previously known as the Des Moines Oak Leafs.
 In 1973, Danny Gloor won the Gary F. Longman Memorial Trophy as rookie of the year.
The Lost Planet, in Des Moines, Iowa was the former dumping site for lime filtered out of the water supply by the Des Moines Water Works.
 It is located in the middle of Waterworks Park in central Des Moines.
 During dry stints, the surface of the site would become cracked and take on an other-worldly look, hence the name.
 It is primarily a location where neighbors walk their dogs, students from Des Moines high schools visit, and birders watch shorebirds and ducks.
Clive is a city in Dallas and Polk counties in the U.S. state of Iowa.
 As of the 2010 Census the population is at 15,447.
 It is part of the Des Moines–West Des Moines Metropolitan Statistical Area.
 Clive is known for its Greenbelt Park and trail system running through the entire community.
 Clive serves as the axis of the western Des Moines suburbs, being located between Urbandale, Waukee and West Des Moines along the major transportation corridors of I-35, I-80 and I-235.
 The City of Urbandale is to the north to northwest, the City of West Des Moines is to the southeast to southwest, the City of Waukee in Dallas County is to the west.

Question: Which airport is civil-military, Des Moines International Airport or University Park Airport?
Answer: Des Moines International Airport