Prince William graduates 29 new police officers The Prince William County Criminal Justice Academy Basic Law Enforcement 47th Session graduated on Friday, Dec. 18, 2020, in a modified ceremony due to the pandemic at the Police Association Hall in Manassas. This class was composed of 29 Prince William County Police officers. The 29 men and women completed a 24-week course of training in all aspects of police work, including classes in firearms, use-of-force decision making, driver training, legal training, patrol techniques, criminal investigation, and crash investigation. The starting pay for Prince William police officers is about $53,000 per year. Shadrack K. Arko is a graduate of Mount Vernon High School in Alexandria, Va. He is fluent in Twi.