Airport authority.
Flew through there last week - it really is to be avoided at all costs. I have never known an airport where the security staff feel the need to make incessant announcements summoning Mr X, Mrs Y or Miss Z back to the security screening point for random bag checks. Check-in area is hellish and the departure lounge is only marginally better, with the whole building punctuated by these decibel-rich announcements. You can put up with a building site in the hope that things will get better, but unless the mentality changes alongside the physical buildings, it won't improve!