From history of intelligence

Will Cold War spy ship anchor in Pennsylvania?

John Lahm was a 25-year-old electrician helping to build a waterfront power plant in Chester when he saw the ship cruising north on the Delaware River.

All around him, work stopped. Hundreds of men stood and stared at the strange-looking vessel, nearly as long as a battleship and outfitted with armlike cranes and a tall central tower.

"That's the Howard Hughes boat," a man next to him said.