(a) The provisions of this chapter shall not be construed as creating a duty on the part of any public safety agency of a local political subdivision or institution within the University System of Georgia to respond to a request from any public safety agency of another local political subdivision or institution of the University System of Georgia as authorized in Code Section 36-69-3.

(b) Notwithstanding the provisions of subsection (e) of Code Section 36-69-3, the provisions of this chapter shall not be construed as creating a duty on the part of a public safety agency rendering assistance extraterritorially to stay at the scene of a local emergency for any length of time. Such responding public safety agency may depart the scene of a local emergency at any time at the discretion of the officer in command of the public safety agency rendering assistance extraterritorially at the scene of the local emergency.