Gettysburg Orbs Ghost Pictures

Chris McTague from Milford, Connecticut sent this ghost picture recently. It was taken at Gettysburg:

"October 2004...clear and crisp night around 9:30pm -- probably 50 degrees. The (first) picture was taken from the car -- with the window down. Digital Canon Powershot." The second was taken on the battle field -- the other two were taken on and around Sachs Bridge in Gettysburg.