I just got back to the US from a month based in Maastricht and doing trips out from there. Sorry I just missed a chance at meeting you in person. There are other APUG members there, and an APUG based group in that area that meets periodically. Find Ruud here on APUG and he can fill you in.
Do you by any chance do traffic control for the airbase that flies the AWACS out of that area? My brother in law used to pilot AWACS.