Question: Donald J. Carty was the CEO of the parent company of the airline headquartered in what Texas city?
Context: The Texas City Terminal Railway is an American terminal railroad that operates 32 mi of track at the Port of Texas City in Texas City, Texas.  Established in 1921, the TCTR is jointly owned by the Union Pacific Railroad and BNSF Railway. American Airlines, Inc. (AA) is an American airline headquartered in Fort Worth, Texas, within the Dallas-Fort Worth metroplex.  It is the world's largest airline when measured by fleet size, revenue, scheduled passenger-kilometers flown, and number of destinations served.  American together with its regional partners operates an extensive international and domestic network with an average of nearly 6,700 flights per day to nearly 350 destinations in more than 50 countries. American Airlines Group, Inc. is an American publicly traded airline holding company headquartered in Fort Worth, Texas.  It was formed December 9, 2013, in the merger of AMR Corporation, the parent company of American Airlines, and US Airways Group, the parent company of US Airways.  The airline groups together form the largest airline in the world, with more than 6,700 daily flights to 336 locations in 56 countries worldwide, about $40 billion in operating revenue, over 100,000 employees, and plans to take delivery of 607 new aircraft, including 517 narrowbody aircraft and 90 widebody international aircraft.  The integration of American Airlines and US Airways was completed when the Federal Aviation Administration granted a single operating certificate for both carriers on April 8, 2015. NAM Air is an Indonesian airline based in Jakarta that commenced its operation on December 11, 2013.  Headquartered in Central Jakarta, the airline acting as feeder of its parent company, Sriwijaya Air, using 11 737-500 Winglets with 8 Executive Class seats and 112 Economy Class seats.  In September 26, 2013, its parent company Sriwijaya Air announces for purchasing up to 100 R-80 regional planes for its future operations.  The airline is listed as a Category 1 airline by Indonesia's Civil Aviation Authority, the highest status that can be achieved for operational safety. The Texas City disaster was an industrial accident that occurred April 16, 1947, in the Port of Texas City.  It was the deadliest industrial accident in U.S. history, and one of the largest non-nuclear explosions.  Originating with a mid-morning fire on board the French-registered vessel SS "Grandcamp" (docked in the port), her cargo of approximately 2,200 tons (approximately 2,100 metric tons) of ammonium nitrate detonated, with the initial blast and subsequent chain-reaction of further fires and explosions in other ships and nearby oil-storage facilities.  It killed at least 581 people, including all but one member of the Texas City fire department.  The disaster triggered the first ever class action lawsuit against the United States government, under the then-recently enacted Federal Tort Claims Act (FTCA), on behalf of 8,485 victims. The Texas City Refinery explosion occurred on March 23, 2005, when a hydrocarbon vapor cloud was ignited and violently exploded at the ISOM isomerization process unit at BP's Texas City refinery in Texas City, Texas, killing 15 workers, injuring more than 180 others and severely damaging the refinery.  The Texas City Refinery was the second-largest oil refinery in the state, and the third-largest in the United States with an input capacity of 437000 oilbbl per day as of January 1, 2000.  BP acquired the Texas county refinery as part of its merger with Amoco in 1999. Texas City Independent School District is a public school district based in Texas City, Texas.  It serves most of Texas City and La Marque as well as a portion of Tiki Island. Donald J. Carty, {'1': ", '2': ", '3': ", '4': "} (born 1946) is a Canadian-American businessman who serves as chairman of Virgin America, Porter Airlines and eRewards.  In addition to these chairmanships, Carty is also a director of EMC Corporation, Dell, Barrick Gold, Talisman Energy, CN Rail, and Gluskin Sheff.  He was previously chairman and chief executive officer (CEO) of AMR Corporation, the parent company of American Airlines, from 1998 to 2003.  Carty is a past director of Hawaiian Airlines, Sears, Placer Dome, CHC Helicopters, and Brinker.  He is a past chairman of Big Brothers Big Sisters of America, a former member of the Board of Trustees of Southern Methodist University and of the board of directors of the Dallas Center for the Performing Arts Foundation and the Dallas Theater Center.  He currently serves on the Executive Board of the SMU Cox School of Business, In January 2007.  Carty became the Vice Chairman and chief financial officer of Dell.  On June 13, 2008, Carty retired from day-to-day operations, but stayed on as a director. The Port of Texas City is a major deepwater port in Texas City, Texas at Galveston Bay, United States.  Its location on the bay, which is used by the Port of Houston and the Port of Galveston, puts Texas City in the heart of one of the world's most important shipping hubs.  s of 2008 the Port of Texas City was the 14th leading port in the United States by total tons of trade and as of 2007 it was the 87th leading port in the world, according to the American Association of Port Authorities. Texas City High School (TCHS) is a public high school in Texas City, Texas in Greater Houston.  It is one of two high schools in the Texas City Independent School District (TCISD).
Answer: Fort Worth