The Union County Courthouse in Elizabeth, NJ is reportedly haunted by Hannah Caldwell, a woman killed during the Revolutionary War who is believed to have been shot by a stray British bullet. Her ghost is said to appear as a woman in white colonial clothing and is blamed for various phenomena, including flickering lights, self-opening doors, unexplained EMF readings, and temperature fluctuations within the building and on the adjacent grounds. The courthouse was investigated by the television show Ghost Hunters in 2009, where workers reported numerous sightings and evidence of paranormal activity. Hannah Caldwell was the wife of Reverend James Caldwell and is often referred to as the first woman to die during the American Revolution. In June 1780, while standing at a window of her home, she was shot by British soldiers who may have mistaken her for a sniper or been acting on orders. Her body was then dragged outside. Her ghost is said to haunt the grounds and corridors of the Union County Courthouse, which is located near the cemetery where she was buried. Sightings of a woman in white colonial clothing have been reported by courthouse workers and investigators. People claim to have seen doors open and close on their own. Investigators have recorded unexplained fluctuations in EMF (electromagnetic field) readings, temperature, and static electricity. Some visitors have reported hearing unexplained sounds, although some specific noises were debunked.