What should have been a simple commute home for many people aboard the  

Pacific Southwest Airline Flight 1771 turned into a horrific nightmare as a result of an angry man seeking revenge for his termination.

Sources -

https://medium.com/@jennbaxter_69070/murder-in-the-sky-how-one-mans-rage-brought-down-a-plane-759ed697b226

Mayday: Air Disaster: Three Horrific Disasters that were linked to a breakdown in security measures

https://asn.flightsafety.org/asndb/326646

https://news.google.com/newspapers?id=a68zAAAAIBAJ&sjid=JzIHAAAAIBAJ&pg=3776%2C5100444

https://news.google.com/newspapers?id=E0YjAAAAIBAJ&sjid=APADAAAAIBAJ&pg=7113%2C8413028