Golden Gate Bridge wanted it to be painted with black and yellow stripes to ensure visibility by passing ships. Senior engineer Charles Alton Ellis, collaborating remotely with Moisseiff, was the principal engineer of the project. Moisseiff produced the basic structural design, introducing his "deflection theory" by which a thin, flexible roadway would flex in the wind, greatly reducing stress by transmitting forces via suspension cables to the bridge towers. Although the Golden Gate Bridge design has proved sound, a later Moisseiff design, the original Tacoma Narrows Bridge, collapsed in a strong windstorm soon after it was completed, because of an unexpected aeroelastic flutter.
Suicides at the Golden Gate Bridge interventions each year. In addition to Golden Gate bridge patrol, law enforcement, and emergency medical personnel, there are Golden Gate Bridge ironworkers who volunteer their time to prevent suicides by talking to or wrestling down suicidal people. One of the ironworkers, Ken Hopper, began working at the bridge in the mid-1980s and sees the volunteer rescue duty as "part of the job". Called "Cowboys of the Sky", they have the equipment and knowledge of the bridge, as well as the experience working at extreme heights, giving them the qualifications to go over the rail and assist those in need. While