Via: Washington Post:
The U.S. Army Corps of Engineers plans to supervise construction of a five-story underground facility for an Israel Defense Forces complex, oddly named “Site 911,” at an Israeli Air Force base near Tel Aviv.
Expected to take more than two years to build, at a cost of up to $100 million, the facility is to have classrooms on Level 1, an auditorium on Level 3, a laboratory, shock-resistant doors, protection from nonionizing radiation and very tight security. Clearances will be required for all construction workers, guards will be at the fence and barriers will separate it from the rest of the base.
Over the years, the Corps has built underground hangers for Israeli fighter-bombers, facilities for handling nuclear weapons (though Israel does not admit having such weapons), command centers, training bases, intelligence facilities and simulators, according to Corps publications.