You've just settled in for a long, relaxing flight. But then you
start to feel pressure and discomfort in your ears. Then there's
some pain. And sounds are somewhat muffled. You may be experiencing
a condition known as "airplane ear".
"...[B]ind the wrists and ankles with duct tape, tie
him down with a bungee cord and inject tranquilizers if necessary
... Talk with the patient while you are restraining him. Explain
what you are doing, and that you are using a restraint to ensure
that he is safe."
Source: From written procedures developed by
NASA, detailing how astronauts in orbit should restrain a mentally
troubled or hostile crewmate.