Katherine Brewster was a key figure in the plot - she was John""s future wife and second-in-command.(Her husband John Connor died on July 4, 2032 - he was killed by The Terminator himself).She was important because her father, US Air Force Lieut.General Robert Brewster (David Andrews), was the USAF program director of CRS (Cyber Research Systems, autonomous weapons division) that had taken over the Skynet project after Cyberdyne Systems was destroyed (by Miles Dyson in the second film).It was filmed over a six-week period in the Lake Tahoe, CA area at Emerald Bay.One of the main characters in the dance was credited as the Corn Queen (Mary Loos).During the scene, a Native-American and the Corn Queen danced on a gigantic drum or tom-tom as it was twirled around by other costumed dancers and participants.Back in Big Whiskey, Wyoming, Davey and Mike finally bring in a string of ponies - it""s springtime - o abide by the Sheriff""s judgment...Sure, yes, yes, he""s a millionaire, you know, like all the Yanks.But he""s eccentric.Oh, he is eccentric.What till I show ya...His bag to sleep in, a sleeping bag, he calls it.The song, equating Sean Thornton (or his grandfather who ""died in Australia...in a penal colony"") with the wild colonial boy Jack Dugan, continues:At the early age of sixteen years, he left his native home.The two assailed boys opened their destroyed bubble""s door and fled for their lives - and barely escaped by jumping down into a waterfall.