There’s more to the Trump-Kelly relationship than meets the eye

So, put the two statements together — along with what a very good source is telling me — and it means that Kelly believes there’s a threat to US planes that will come from south of the border.

That happens to be where Mexico is located.

And there are also worries about threats to major population centers from dirty bombs with the material also coming through Mexico.

Put Kelly’s emphasis on threats coming from Mexico together with Trump’s obsession with a wall stretching across the southern US border, and the idea of bringing the Homeland Security chief into the White House makes perfect sense.