Only a few have gone through the extensive background checks needed to access Plum Island — where a secretive branch of the US government runs exercises to prepare for all-out cyber war.
The speck of land in the Long Island Sound, owned by the Department of Homeland Security is largely deserted. The main attractions are a defunct lighthouse and a center that studies infectious animal diseases.
It is also the perfect setting for the US government to stage mock cyber attacks on the power grid.
Every six months, the Defense Advanced Research Projects Agency (DARPA) — part of the Pentagon — ferries over experts who work to jumpstart a dead grid, while warding off a series of cyber threats.
*Previously: "Finnish soldiers find 'secret Russian military bases
' after raiding mysterious island"