Today I learned about a device called a "knee defender," built to combat the problem of legroom on airplanes - or, rather, the lack thereof.
It's supposed to prevent the person in the seat in front of you from reclining. Some airlines have banned it, otherwise my 6-foot-1 self would be halfway through ordering one right now. This is how it works:
The plane was diverted to Chicago.
Both of them were seated in United's Economy Plus section, which means they had up to five inches of additional legroom - something the airline considers "spacious."
CORRECTION: An earlier version of this story incorrectly stated that the FAA has banned the Knee Defender. The text has been corrected.