Specialized Units   Community Services Unit Information & Analysis Unit Criminal Investigation Unit Crisis Negotiation Team Evidence Detection Unit Professional Development Unit K-9 Unit Motorcycle Unit Ordnance Disposal Police Athletic League Special Weapons & Tactics Unit Traffic Services Unit Walking and Bike Patrol Mounted Patrol Unit  Patrol Division   The New Castle County Police Department offers a number of possible career development opportunities to its officers in the form of specialized units. Click your mouse on each of the specialized units to see a short video and a brief summary of the units history, roles and responsabilities.