I know this is posted a little late, but I wasn't on this forum back then
I heard shots on the shooting ranch, so my guess is that there was a military training, which explains these military planes to be here
Enjoy
on the 26th I saw these:
USAF Learjet C-21A (LJ35) was here for 2 days

84-0087 by zonan.adolfse, on Flickr
Bundespolizei Eurocopter EC135 stopped by to refuel

D-HVBE by zonan.adolfse, on Flickr
Belgian Air Force NH90 helicopter also stopped by for a day

RN-01 by zonan.adolfse, on Flickr
Then on the 27th there were these:
Czech Air Force Let L-410, this one was here 2 days earlier as well, but I didn't manage to catch it that day

2710 by zonan.adolfse, on Flickr
This Beech 1900D by Private Wings has come several times, I catched it on this day

D-COCA by zonan.adolfse, on Flickr
Hope you enjoyed these pictures