We noticed they painted the tennis courts a nice blue and then we saw the notice of filming so figured that had something to do with it but talking to a flagman today I think the Parks Board is redoing the courts. The filming is taking place on the lagoon. I was curious and took some photos. There are lots of geese there so I imagine they'll be curious as well!
They're filming the TV series "The Man in the High Castle"
https://en.wikipedia.org/wiki/The_Man_in_the_High_Castle_(TV_series)