Robair Robair:
Later model white van, large antenna in the back with a flag attached to it.
That little detail told me 'construction site'. It reminds me of flags that every vehicle has to have while working around large equipment so that the operator can see the smaller vehicle. And 'white' is pretty standard on construction sites. I'd be looking for a panel van, Ford Transit or Chrysler/Mercedes Sprinter.
We got this alert through email, and I got it on my cell phone too, not to mention all the electronic road signs in the city. Amber alerts are evolving well!