Nice photos, nice looking aircraft.
I'm sure some here already know this, but DCFD has two Oshkosh ARFF foam trucks stationed at downtown Washington locations (non-airport) that are primarily used for cover on Marine One (though I suppose they might be handy for the occasional fuel tanker crash on the freeway).
Ya never see them on TV, but then they don't show the other two helicopters involved with White House ops either.