In this subtitle the following words have the meanings indicated. “Ammunition” has the meaning stated in § 5–133.1 of this title. “Extreme risk protective order” means a civil interim, temporary, or final protective order issued in accordance with this subtitle. “Firearm” has the meaning stated in § 5–101 of this title. “Petitioner” means an individual who files a petition for an extreme risk protective order under this subtitle. “Petitioner” includes: a physician, psychologist, clinical social worker, licensed clinical professional counselor, clinical nurse specialist in psychiatric and mental health nursing, psychiatric nurse practitioner, licensed clinical marriage or family therapist, or health officer or designee of a health officer who has examined the individual; a law enforcement officer; the spouse of the respondent; a cohabitant of the respondent; a person related to the respondent by blood, marriage, or adoption; an individual who has a child in common with the respondent; a current dating or intimate partner of the respondent; and a current or former legal guardian of the respondent. “Respondent” means a person against whom a petition for an extreme risk protective order is filed.