According to ADSB there is some USArmy Chinook migration going on this week towards Bremerhaven.
5-9 R08462 HEFTY62 from Illesheim
5-9 nn HEFTY80 from Powidz
5-9 R08182 nn from Illesheim
9-9 R08443 nn from Illesheim
9-9 R08217 HEFTY17 from Kassel
Destination seems to be the ABC-Halbinsel between Kaiserhafen II & III.
Ads-b.nl records also show UH60 26565 (2-9) and 26510 (5-9) arrive at Nordholz from Kassel.
According to VesselFinder the RO-RO vessel Morning Chorus arrived in Kaisershafen II on 6-9.
Now all of this could be pure coincidence, but speculation could suggest an imminent USArmy sea transport.
Anyone more information?