The United States Park Police hold jurisdiction of the National Parks in Washington DC, including our Meridian Hill Park. They will be hosting a citizens' academy beginning on October 3rd that will run through November 15th.
From the USPP Website: Investigators, trainers, station commanders, and officers will explain the United States Park Police organization, police procedures, and what it is like to be a police officer. The 6-week course is offered by the Training Branch. Topics will include: Use of Force, Investigations, Special Forces Operations, Radio Communications, Emergency Response and much more.
If you are interested in further information including an application, please use this LINK to the USPP website.