The Park Police lieutenants are the second in command of the department and are in charge in the Captain's absence. One lieutenant supervises the Park Safety Unit , which is a combination investigative unit, crime prevention unit, administrative services and special programs unit. The other lieutenant oversees the Patrol Unit. Sergeants, patrol officers, and agents may be assigned to the Park Safety Unit for various functions. Recruiting, background investigations, undercover investigations, and special community oriented activities such as the annual Safety Camp are among their responsibilities as well.
Criminal investigations are primarily the responsibility of the sergeants assigned to the unit.
Five patrol sergeants answer to the patrol lieutenant. They are responsible for supervising the daily patrol activities as shift supervisors. The patrol sergeants are also responsible for general supervision of their team area, communicating with officers and agents assigned to their team, attending meetings, responding to particular problems in the parks in their teams, and directing the patrol patterns for the team. Also within the patrol function are the officers assigned to directed patrol. Working under the supervision of one of the patrol supervisors, these officers concentrate on specific problems and problem areas, providing extra patrol, both visible and undercover, where most needed.