Title: Berkeley, Missouri
Content:  Boeing Integrated Defense Systems is headquartered in Berkeley. Prior to its merger with Boeing, McDonnell Douglas was headquartered in the same complex in Berkeley. Boeing chose to locate the defense systems offices in the St. Louis area because of the metropolitan area's central location in the United States, the role of the space and aircraft programs of the former McDonnell Douglas location, and bipartisan support from area politicians. At the site, Boeing maintains the James S. McDonnell Prologue Room, containing a museum exhibition of Boeing memorabilia.
Title: Boeing UK
Content: Westminster Sheffield Lossiemouth Crawley The company has 65 sites across the UK and Ireland. The site in Westminster is the registered office address of: Boeing UK, Boeing Defence UK, Boeing Commercial Aviation Services Europe, Boeing Distribution Services, Boeing UK Holdings, Boeing European Holdings  and Boeing Operations International.  Known as 'Boeing Sheffield', the site is a manufacturing facility built in October 2018 near the Advanced Manufacturing Research Centre (AMRC). The facility is the first manufacturing site outside of the United States and it produces more than 100 different high-tech actuation system components for the 737 and 767 which are then sent back to the US for fitting. Actuation components are used on 
Title: History of Boeing
Content:   In January 2000, Boeing chose to expand its presence in another aerospace field of satellite communications by purchasing Hughes Electronics. In March 2001, Boeing announced the pending relocation of its headquarters from Seattle to one of three cities: Chicago, Dallas, or Denver. All three had offered packages of multimillion-dollar tax breaks, and the selection of Chicago was announced on May 10; the move was completed in early September, just before 9/11. Its offices are located in the Fulton River District just outside the Chicago Loop. On September 11, 2001, four Boeing planes were hijacked as part of the 9/11 attacks 
Title: Boeing
Content:  Boeing, Philip M. Condit, assumed those roles in the combined company, while Harry Stonecipher, former CEO of McDonnell Douglas, became president and COO. The Boeing Company has its corporate headquarters in Chicago, Illinois. Boeing is organized into four primary divisions: Boeing Commercial Airplanes (BCA); Boeing Defense, Space & Security (BDS); Boeing Global Services; and Boeing Capital. In 2019, Boeing recorded US$ 76.6billion in sales. Boeing is ranked 54th on the Fortune magazine "Fortune 500" list (2020), and ranked 121st on the "Fortune Global 500" list (2020). In 2019, Boeing's global reputation, commercial business, and financial rating suffered after the 737 MAX was grounded worldwide following two fatal crashes in late 2018 and early 2019.
Title: Boeing International Headquarters
Content:  The Boeing International Headquarters (colloquially known as the Boeing Building and formerly known as the Morton-Thiokol International Building) is a 36-floor skyscraper located in the Near West Side of Chicago. The building, at 100 North Riverside Plaza, is located on the west side of the Chicago River directly across from the downtown Loop. The building was designed with a structural system that uses steel trusses to support its suspended southwest corner in order to clear the Amtrak and Metra railroad tracks immediately beneath it. It won the Structural Engineers Association of Illinois' "Most Innovative" Design Award. The building was originally constructed for the Morton Salt Company in 1990, but became largely vacant a decade later after the company was acquired and downsized. Boeing moved their corporate headquarters there in 2001 when they opted to leave Seattle for Chicago. Navteq moved their headquarters to the Boeing Building in 2007. It has also housed offices of Ameritech.. Reuters reported that the shift in priorities rendered Boeing's Chicago HQ a "ghost town".
Title: Boeing Defense, Space &amp; Security
Content:  Boeing Defense, Space & Security was headquartered in Greater St. Louis north of St. Louis Lambert International Airport in the northern St. Louis suburb of Berkeley, Missouri until January 2017, when top executives and support staff were relocated to Arlington, Virginia. There are also significant operations in nearby Missouri communities, such as Hazelwood and St. Charles. It remains one of the largest employers in Greater St. Louis with 13,707 local employees as of 2018. Other major locations of BDS are in California and Washington state. Boeing chose to locate the defense systems offices in the St. Louis area because of the role of the space and aircraft programs of the former McDonnell Douglas location, and bipartisan support from area politicians.
Title: Boeing UK
Content:  presence in the UK by announcing its £7 million investment to build a new training centre at Crawley, West Sussex, close to London Gatwick. The move was to allow more convenient travel for those who required training in Europe, instead of travelling to Seattle, U.S. In September 2005, Sir Roger Bone succeeded Michael Jenkins as president of Boeing UK. Boeing opened its European Sales and Marketing Headquarters at Heathrow House, moving further operations from the U.S. to the UK. In 2007, Boeing opened its Defence Systems Engineering and Integration facility in Bristol and in 2009 integrated all UK defence programs under one entity by establishing Boeing Defence UK (BDUK). This enabled defence operations in the UK to be localised and more efficient.
Title: History of Boeing
Content:  to demolish the headquarters complex on East Marginal Way South instead of upgrading it to match new seismic standards. The headquarters were moved to an adjacent building and the facility was demolished in 1996. In 1997, Boeing was headquartered on East Marginal Way South, by King County Airport, in Seattle. In 1996, Boeing acquired Rockwell's aerospace and defense units. The Rockwell business units became a subsidiary of Boeing, named Boeing North American, Inc. In December 1996, Boeing announced its intention to merge with McDonnell Douglas and, following regulatory approval, this was completed on August 4, 1997. This had been delayed by objections from the European Commission, which ultimately placed 3 conditions on the merger: termination 
Title: Near West Side, Chicago
Content:  Boeing operates its headquarters at 100 North Riverside. Boeing moved into the facility, formerly the headquarters of Morton Salt, in 2001. Orbitz has its headquarters in the Citigroup Center in the Near West Side. McDonald's moved its headquarters to West Loop in 2018. PepsiCo's Chicago offices are in the Near West Side. Aeroméxico operates the Chicago Downtown Location on the first floor at 954 West Washington Boulevard. The Consulate-General of Mexico in Chicago is located at 204 South Ashland Avenue. Previously, Trizec Properties's headquarters and Chicago-area offices were in 10 S. Riverside Plaza.
Title: Boeing Commercial Airplanes
Content:  Boeing Commercial Airplanes (BCA) is a division of The Boeing Company. It designs, assembles, markets, and sells jet airliners and business jets (Boeing Business Jets), and also provides product-related maintenance and training to customers worldwide. BCA operates out of its division headquarters in Renton, Washington, and has more than a dozen engineering, manufacturing, and assembly facilities located throughout the U.S. and internationally. It includes the assets of the Douglas Aircraft division of the former McDonnell Douglas Corporation, which merged with Boeing in 1997. As of the beginning of 2020, BCA employed almost 65,000 people.

Question: where are boeing headquarters?
Answer: Seattle.