Just as Hollie Mackey was about to get up from her seat to go to the bathroom during Tuesday morning’s Southwest Airlines flight from New York to Dallas, flight attendants asked passengers to stay seated due to continual turbulence. Mackey put her seatbelt back on, shared a glance of disappointment about the bumpy ride ahead with the woman seated at the window to her left and settled back in. Moments later, the unthinkable happened.