A visit to the USS Hornet in Alameda is like taking a trip back in time. The ship served in both World War II and Vietnam, and it famously recovered the Apollo 11 astronauts from the Pacific after the 1969 moon landing. Today, the Hornet’s a museum. Its docents are veterans who served on the ship, or other aircraft carriers like it. And according to them, that it’s not just old artifacts and displays that reveal the Hornet’s history—they say the ship is also haunted.