Picture a 3-year-old sitting in a middle seat on an airplane, rows away from her parents as turbulence shakes the plane. Now imagine her parents trapped in their own seats rows away unable to help her, not knowing if she is safe sitting between strangers. Not to mention what it’s like to be one of those flyers next to the toddler, having to soothe a child they’ve never met. And what if the worst should happen, and passengers must evacuate? Will the parents calmly leave the plane? Or will they slow everyone down by running in the direction of their child? Can the solo traveler be counted on to...