The Ultimate Halloween Party in the East Bay onboard the Haunted USS Hornet Museum! USS Hornet Museum & ScareCo Productions PRESENT MONSTERS BASH Saturday, October 31, 2015 7:30pm – 1:00am. At this annual fundraiser onboard the “Grey Ghost,” visitors will get a good fright throughout the evening with a, costume contests, and other treats. Dance favorites by The Cocktail Monkeys! Now featuring a professional Haunted House attraction.