At first, this may look like a water theme park or movie set, but it’s actually a 12-million-gallon, football-field-size pool at the Naval Surface Warfare Center in the Maryland suburbs of Washington, D.C. Featuring 216 electronically-controlled wave boards, scaled-down fiberglass models, complete with canoe-sized cruisers riding waves that max out at a few feet high. When the hinged wave boards, each with its own motor, are synced up to software, they can precisely recreate eight different ocean conditions – from flat calm to typhoon-like – across all seven seas. The Navy mainly uses this pool to test models of their billion-dollar ships, making sure they will float, before building them, as well as assessing whether sailors can launch missiles and land helicopters in particular circumstances. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one of a jet-powered snowboard.