A passenger who appeared to be experiencing a mental health crisis punched out the plexiglass of a window mid-flight.

After the man began to have what other passengers called a mental health crisis several male passengers moved in and ...

during which the passenger was "banging on the windows" mid-flight. The Frontier Flight 4856 was traveling from Denver to Houston and landed at George Bush Intercontinental Airport at 11:10 p.m ...