Re: Hard to shoot a plastic bag
I'm sure they let the press have free run of the entirety of the airport such that there is an even coverage.
A few press cameras can cover a very large area. The sorts of camera operators who work at sports events (eg golf) who can track a tiny ball moving at decent speeds from a long way off would be able to find and track a drone from some way off.
And I'm pretty sure, especially as the airport is closed at these times (or was), there's little harm in having a few members of the press and associated camera crew escorted inside - so long as they're paying for the escort's time and a 'small administration fee' to the higher ups.