Ghost Hunters, Fort Delaware

In this episode, the Ghost Hunters go to investigate the largest Civil War prison, a building on a man-made island called Fort Delaware.

This building has been considered haunted because of all the soldiers who died there during the 1800's.

They get there, set up, and begin looking around. Awhile after they're there, they hear a really loud bang, that echoes through the whole building. The bang is so loud, that another team member heard it outside. While reviewing over evidence, the curator of the Fort tells them that it sounds like a cannon going off.

A few other things that happen to them are doors shutting, footsteps, and whispers, but nothing as loud and concrete as the cannon is heard again.