In effecting an arrest or in preventing an escape from custody, a law enforcement officer is justified in using a chokehold only when he or she reasonably believes that it is necessary to defend himself or herself or a third person from what he or she believes to be the use or imminent use of deadly physical force or infliction of serious physical injury. The use of a chokehold for any other purpose shall be cause for the law enforcement officer’s immediate dismissal and revocation of his or her POST certification under chapter 590.