US Parks Police Mounted Unit Visits By SY 2018-19 November 09, 2018 Share Page US Parks Police demonstrate how they use horses for policing in the parks. US Parks Police demonstrate how they use horses for policing in the parks. Horses aid officers by allowing them to be elevated above crowds. US Parks Police officer poses with Police truck and trailer used to transport horses. This brave young lady got to experience the view from atop the police horse. This young man took a turn sitting on the US Parks Police horse. US Parks Police officer giving instructions to a student rider. The US Parks Police gave students instruction on how to properly mount and sit on the police horse.