After Delta Flight 4819’s cabin rolled upside down and came to rest in a terrifying crash landing at Toronto Pearson International Airport, a flight attendant stood on what had been the ceiling – one leg propped on an upturned baggage compartment – and addressed passengers who’d unbuckled themselves from inverted seats.

Delta said that claims spreading online alleging the captain and first officer had failed training events were false, and both crew members are Federal Aviation Administration-certified for their positions.