Engineer Collin arrives at the Halloween party in the park, with whistle, of course...and curious bystanders...

Collin decorates pumpkin at the Mason Mill Park Halloween party! (random psychedelic background courtesy of Mother Nature and digital camera technology).

Having a grand ol' time at the Halloween party...is Engineer Little Mister Smiley.

Crafty Collin crafts creatively (a ghost with little pumpkins on its belly...nicey).

Engineer Collin notices a big black spider! (but still retain his calm, cool, curious demeanor)