Police Officers may also be assigned duties as Detectives, Crime Prevention Officers, Department Training Officers, Field Training Officers, Accident Investigators, Breathalyzer Operators, Firearms Instructors, Hostage Negotiators, or SWAT Team Officers. The selection process includes a written test, an oral interview board, a background investigation, Truth Verification, psychological evaluation, a medical exam, physical Capacity testing, and a urinalysis/drug screen.