Answer the question at the end by quoting:

Ford was born at the Swedish Covenant Hospital in Chicago, Illinois to Christopher Ford (born John William Ford), an advertising executive and former actor, and Dorothy (nee Nidelman), a former radio actress. His father is Irish and his mother is Jewish. A younger brother, Terence, was born in 1945. Ford's paternal grandparents, John Fitzgerald Ford and Florence Veronica Niehaus, were of Irish Catholic and German descent, respectively.
On October 23, 1999, Harrison Ford was involved in the crash of a Bell 206L4 LongRanger helicopter (N36R). The NTSB accident report states that Ford was piloting the aircraft over the Lake Piru riverbed near Santa Clarita, California, on a routine training flight. While making his second attempt at an autorotation with powered recovery, Ford allowed the aircraft's altitude to drop to 150-200 feet before beginning power-up. The aircraft was unable to recover power before hitting the ground. The aircraft landed hard and began skidding forward in the loose gravel before one of its skids struck a partially embedded log, flipping the aircraft onto its side. Neither Ford nor the instructor pilot suffered any injuries, though the helicopter was seriously damaged. When asked about the incident by fellow pilot James Lipton in an interview on the TV show Inside the Actor's Studio, Ford replied, "I broke it."  On March 5, 2015, Ford's plane, believed to be a Ryan PT-22 Recruit, made an emergency landing on the Penmar Golf Course in Venice, California. Ford had radioed in to report that the plane had experienced engine failure. He was taken to Ronald Reagan UCLA Medical Center, where he was reported to be in fair to moderate condition. Ford suffered a broken pelvis and broken ankle during the accident, as well as other injuries.  On February 13, 2017, Ford landed an Aviat Husky at John Wayne Airport on the taxiway left of runway 20L. A Boeing 737 was holding short of the runway on the taxiway when Ford overflew them.

Was Ford flying the helicopter or was he a passenger?

Ford was piloting the aircraft over the Lake Piru riverbed near Santa Clarita, California,



Answer the question at the end by quoting:

Fazlur Rahman Khan (Bengali: phjlur rhmaan khaan, Fozlur Rohman Khan) (3 April 1929 - 27 March 1982) was a Bangladeshi-American structural engineer and architect, who initiated important structural systems for skyscrapers. Considered the "father of tubular designs" for high-rises, Khan was also a pioneer in computer-aided design (CAD). He was the designer of the Sears Tower, since renamed Willis Tower, the tallest building in the world from 1973 until 1998, and the 100-story John Hancock Center. Khan, more than any other individual, ushered in a renaissance in skyscraper construction during the second half of the 20th century.
Khan's central innovation in skyscraper design and construction was the idea of the "tube" structural system for tall buildings, including the framed tube, trussed tube, and bundled tube variants. His "tube concept", using all the exterior wall perimeter structure of a building to simulate a thin-walled tube, revolutionized tall building design. Most buildings over 40 stories constructed since the 1960s now use a tube design derived from Khan's structural engineering principles.  Lateral loads (horizontal forces) such as wind forces, seismic forces, etc., begin to dominate the structural system and take on increasing importance in the overall building system as the building height increases. Wind forces become very substantial, and forces caused by earthquakes, etc. are important as well. The tubular designs resist such forces for tall buildings. Tube structures are stiff and have significant advantages over other framing systems. They not only make the buildings structurally stronger and more efficient, but also significantly reduce the structural material requirements. The reduction of material makes the buildings economically more efficient and reduces environmental impact. The tubular designs enable buildings to reach even greater heights. Tubular systems allow greater interior space and further enable buildings to take on various shapes, offering added freedom to architects. These new designs opened an economic door for contractors, engineers, architects, and investors, providing vast amounts of real estate space on minimal plots of land. Khan was among a group of engineers who encouraged a rebirth in skyscraper construction after a hiatus of over thirty years.  The tubular systems have yet to reach their limit when it comes to height. Another important feature of the tubular systems is that buildings can be constructed using steel or reinforced concrete, or a composite of the two, to reach greater heights. Khan pioneered the use of lightweight concrete for high-rise buildings, at a time when reinforced concrete was used for mostly low-rise construction of only a few stories in height. Most of Khan's designs were conceived considering pre-fabrication and repetition of components so projects could be quickly built with minimal errors.  The population explosion, starting with the baby boom of the 1950s, created widespread concern about the amount of available living space, which Khan solved by building upward. More than any other 20th-century engineer, Fazlur Rahman Khan made it possible for people to live and work in "cities in the sky." Mark Sarkisian (Director of Structural and Seismic Engineering at Skidmore, Owings & Merrill) said, "Khan was a visionary who transformed skyscrapers into sky cities while staying firmly grounded in the fundamentals of engineering."

Did this system do well?
Most buildings over 40 stories constructed since the 1960s now use a tube design derived from Khan's structural engineering principles.