The Japanese C-2 is expected to operate out of Le Bourget.
Is it possibe the RAF decided to fly the Tiffies from homeplate instead of deploying them? I haven't seen any reports on transports to Hohn to support them either.. But perhaps they will arrive early on Monday.
A 2-ship Greyhounds with that callsign is on its way heading southwest from Gardermoen. Seems too early for the mentioned ETA so might be going to their boat first, not sure where she is at the moment.
Though not necessarily exercise-related; C-37 with callsign XA34 is over the Atlantic now, on a slightly more southern route, having taken off from MacDill earlier.