After a few hours, a woman stood up at the front of the bus, called for attention, and explained the proper protocols for wearing an N95 respirator mask, Fehrenbacher said.
After she sat down, Fehrenbacher said he heard someone behind him mutter "mask nazi" under their breath.
"You could tell that the flip — between being a passenger who's catered to on a luxury cruise line, versus an evacuee being rescued in the middle of an outbreak — that switch hadn't flipped for quite a few people," Fehrenbacher said.
"Some people were very, very critical, very, very frustrated, extremely upset with the circumstances of the bus ride," Christoph added.