Richard Marx, a singer who had a string of hits in the 80's such as "Don't Mean Nothing" and "Right Here Waiting For You", helped to subdue a deranged passenger aboard a Korean Airlines flight.
http://radio.com/2016/12/20/richard-marx-subdues-deranged-passenger-on-plane/
http://radio.com/2016/12/20/richard-marx-subdues-deranged-passenger-on-plane/