Question: Where is the company headquarters of the airline whose call sign was named after a former U.S. Air Mail pilot?
Context: KIPA (1060 AM) is a radio station on the Big Island of Hawai'i whose call sign dates back to 1947, and now broadcasts an eclectic mix of Hawaiian Music, Reggae, Jazz, Blues, Oldies and a variety of special programs including a Japanese show early mornings.  Licensed to Hilo, Hawaii, United States, the station serves the Hilo market and surrounding areas.  Long-time local personality, Mel Mederios, also known as the "Mynah Bird" hosts the morning show, with local and regional news, events and community affairs information.  The station is currently owned by Parrott Broadcasting Limited Partnership and features programing from CNN Radio.  It also has two sister FM stations: KHBC 92.7 FM and a second FM station on the west side of the Big Island known as "KONA-FM" with the FCC call sign KHWI 92.1 FM (formerly known as "K-Hawaii"), licensed at Holualoa, HI, serving the Kailua-Kona market, and broadcasting from studios at the Sheraton Keauhou Bay Resort & Spa. Leon Dewey "Lee" Cuddeback (May 16, 1898 - July 6, 1984) flew the first scheduled, civilian Air Mail (Contract Air Mail) flight in the United States on April 6, 1926.  He did so as chief pilot of Varney Air Lines.  His route began in Pasco, Washington, had a stop in Boise, Idaho, and terminated in Elko, Nevada.  Because the start of the contract air mail system is considered the beginning of airline service, Cuddeback's flight is cited as the first U.S. airline flight, and is also celebrated as the "birthday" of United Airlines. Domestic U.S. Air Mail was established as a new class of mail service by the United States Post Office Department (POD) on May 15, 1918, with the inauguration of the Washington–Philadelphia–New York route.  Special postage stamps were issued for use with this service.  Domestic air mail became obsolete in 1975, and international air mail in 1995, when the USPS began transporting First Class mail by air on a routine basis.  All post-1977 United States stamp images are copyright of USPS. GoJet Airlines LLC is a company headquartered in Bridgeton, Missouri, United States.  Wholly owned by Trans States Holdings, it has 1670 employees.  It operates commuter feeder services under the United Express and Delta Connection names.  Go Jet Airlines has crew bases at Lambert-Saint Louis International Airport, O'Hare International Airport, Denver International Airport, and Raleigh-Durham International Airport.  Flights are currently operated out of United's hubs at O'Hare International Airport and Denver International Airport, as well as Lambert-Saint Louis International Airport.  GoJet's Delta Connection flights currently operate out of Lambert-Saint Louis International Airport , Detroit Metropolitan Airport and Raleigh-Durham International Airport.  Its call sign "Lindbergh" is named after aviation pioneer Charles Lindbergh, who flew the "Spirit of St. Louis" solo across the Atlantic Ocean in 1927, the first person to do so. With the establishment of the first air-mail route in 1918, and the later additional routes, plus the accepted use of premium priced air mail by the public, it was only natural that the Railway Mail Service (RMS), being in charge of transit mail, was assigned the task of establishing "Air Mail Field" (AMF) postal facilities at the major airports.  Only outgoing air mail was distributed at these workrooms, channeled there by both the post offices and Railway Post Office (RPO) routes.  This mail was distributed and dispatched to other AMFs via the different flight connections.  Incoming mail from other AMFs was distributed by general scheme and pouched to outgoing RPOs and necessary post offices.  The Motor Vehicle Service provided frequent trips between the city post office and the AMF for air mail ground transportation.  In 1951, there were 1200 clerks manning forty AMFs.  They continue to exist within the U.S. Postal Service (USPS) and are now called Air Mail Centers (AMCs). Charles Augustus Lindbergh (February 4, 1902 – August 26, 1974), nicknamed Slim, Lucky Lindy, and The Lone Eagle, was an American aviator, military officer, author, inventor, explorer, and environmental activist.  At age 25 in 1927, he went from obscurity as a U.S. Air Mail pilot to instantaneous world fame by making his Orteig Prizewinning nonstop flight from Long Island, New York, to Paris.  He covered the 33 ⁄ -hour, 3,600 smi alone in a single-engine purpose-built Ryan monoplane, "Spirit of St. Louis".  This was the first solo transatlantic flight and the first non-stop flight between North America and mainland Europe.  Lindbergh was an officer in the U.S. Army Air Corps Reserve, and he received the United States' highest military decoration, the Medal of Honor, for the feat. Airmails of the United States or U.S. Air Mail was a service class of the United States Post Office Department and its successor United States Postal Service delivering mail flown by aircraft within the United States and its possessions and territories.  Letters and parcels intended for air mail service were marked as "Via Air Mail" (or equivalent), appropriately franked, and assigned to any then existing class or sub-class of the Air Mail service. James Clark Edgerton (February 2, 1896 - October 26, 1973) was a U.S. Army aviator and Air Mail pilot who as a young Lieutenant flew the Philadelphia to Washington, DC, leg on the first day of scheduled Air Mail service in the United States on May 15, 1918.  Edgerton, who retired as a Colonel, was also credited with being the first pilot ever to fly into a thunderstorm and with devising the first fire-extinguishing system installed for an aircraft engine.  He also helped to organize a civilian pilot-training program and during World War II he served as executive officer for air operations of the War Department. Dean Cullom Smith (September 27, 1899 – March 4, 1987) was a pioneer American mail pilot, test pilot, flying instructor, Antarctic pilot, and airline pilot.  At 17 years of age, he became the youngest flight instructor in U.S. Army history.  He was a lead pilot for the U.S. Postal Service's airmail service, and was the first pilot to initiate night air mail flights.  He was an executive for many airlines and aircraft companies. Lieutenant Colonel Iceal E. "Gene" Hambleton, USAF (November 16, 1918 – September 19, 2004) was a United States Air Force navigator and electronic warfare officer who was shot down over South Vietnam during the 1972 Easter Offensive.  He was aboard an EB-66 aircraft whose call sign was Bat 21.  As the ranking navigator/EWO on the aircraft, he was seated immediately behind the pilot, giving him the call sign "Bat 21 Bravo".  He survived for 11½ days behind enemy lines until he was retrieved in a daring ground operation.  His rescue was the longest and most costly search and rescue mission during the Vietnam War.  He received the Silver Star, the Distinguished Flying Cross, the Air Medal, the Meritorious Service Medal and a Purple Heart for his actions during this mission.
Answer: Bridgeton, Missouri