Halloween is always unusually creepy at the Hiller Aviation Museum south of SFO. Headlining the annual event is the arrival of the witch, not via broomstick, but by helicopter. As she hovers over the tarmac the beloved crone will be merrily tossing pumpkins from on high. These splattering squashes are just part of the fun for Geezer grandkids. Inside the Haunted Hanger there are prizes, candy and spooky surprises. Costumes encouraged .October 30 and 31. Kids under 4 free.