"UPDATED on September 2, 2014: In the past eight days there’ve been three U.S. flights that had to make unscheduled landings after passengers got into fights over the ability to recline their seats. The first one was started by a passenger using Knee Defender but I don’t recommend getting this contraption."
Read more:
http://www.johnnyjet.com/2014/07/how...#ixzz3CHulqj8u
I get a lot of good traveling advice from JohnnyJet.com.