Yes quite normal.
The pesky swines also show up on the map and then disappear just when you go to zoom in and cap them.
The Germans along with half of NATO do a lot of their military training in the US so chances are it is supporting that or the German diplomatic missions in the US.
A-400s are heavy tactical transports similar to a C-17 or C-130 and are not the sort of plane to be carrying diplomats/VIPs.