The trouble with an elaborate concealment scheme like yours (in the pond?) is that it would take a lot of work with heavy equipment and a lot of time to make it happen - and it would all be done in full view of the public. People would notice. It can be safely assumed that no elaborate waterproofed anti-aircraft systems have been installed under the whitehouse lawn or in the pond…
The wild and crazy guys, Horgay and Yortuk, portrayed by Dan Akroyd and Steve Martin.