Kan. Stat. § 12-111
Whenever the necessity arises during any emergency resulting from the existence of a state of war, or from fire, or any other cause, the firemen and officers of the fire department of any city or township may, together with all necessary equipment, lawfully go or be sent beyond the territorial limits of such cities or townships to any point within the state, to assist in meeting such emergency: Provided, The fire chief or person in charge of the fire department shall have the right in every case to determine whether or not a city or township can spare all or any portion of its fire equipment and firemen at any particular time. In such event the acts performed for such purposes by such firemen or officers, and the expenditures made for such purpose by such city or township shall be deemed conclusively to be for a public and governmental purpose and all of the immunities from liability enjoyed by a city or township when acting through its firemen or officers of the fire department for a public or governmental purpose within its territorial limits shall be enjoyed by it to the same extent when such city or township is so acting under this section or under other lawful authority beyond its territorial limits. The firemen and officers of the fire department of any city or township, when acting hereunder, or under other lawful authority, beyond the territorial limits of such city or township, shall have all of the immunities from liability and exemptions from laws, ordinances and regulations and shall have all of the pension, relief, disability and other benefits, enjoyed by them while performing their respective duties within the territorial limits of such city or township.
K.S.A. 12-111