They said, "In everything, there's an opposition."   These saying is the best to describe what four airlines do as a counter to the US Department of Homeland Security's ban on large electronic that covers nine airlines.  Under the ban, passengers are not allowed to bring any electronic devices larger than a cell phone into the cabin of non-stop flights to the US from 10 airports in the Middle East and North Africa.  We all know that many travelers are inseparable with their gadgets.