The chief of police, with the approval of the board, may appoint a police officer to serve as lieutenant colonel on matters relating to homeland security and disaster communications. Notwithstanding the provisions of section 84.510 to the contrary, such position shall be a new position and in addition to the number of lieutenant colonels authorized under section 84.510. The lieutenant colonel authorized under this section shall be responsible for matters relating to homeland security and disaster communications as determined by the chief and be entitled to the same rank, privileges, and compensation afforded all other lieutenant colonels within the department.