Air rage: Why are flight crews dealing with more unruly passengers?

Air travel can be hard work, whether it's navigating super-long security lines, losing the seat lottery and ending up jammed in the middle of the row, or finding yourself on a plane grounded on the runway, delayed and unmoving for the foreseeable future. In these stress-inducing scenarios, most of us might plug in our headphones and get lost in a podcast or movie -- or simply close our eyes and try to get some sleep. For others, the pressure gets too much, the scales tip over into the wrong dire