Lead artist Dan Fox and a couple dozen of volunteers build a 45-foot-tall "Alien Siege Machine" at NIMBY, an industrial art space in Oakland,
Lead artist Dan Fox and a couple dozen of volunteers build a 45-foot-tall "Alien Siege Machine" at NIMBY, an industrial art space in Oakland, Calif., on Saturday, July 12, 2014. The Alien Siege Machine will be completely assembled and burned at the Burning Man annual art festival on Labor Day weekend in the Black Rock Desert, Nevada. (Ray Chavez/Bay Area News Group)