Well, we don't think Richard Marx and his wife Daisy Fuentes saw this coming while on vacation.
During the couple's flight from Hanoi to Seoul today, a man went "crazy" and started attacking fellow passengers and the Korean Air crew — an ordeal that lasted FOUR hours and injured three people! Holy hell!
The 50-year-old TV host documented the entire thing on her phone while the Right Here Waiting singer fought off and tried to restrain the attacker.
Miz Fuentes shared photos to her Facebook account while detailing what happened: