first responder
Defined in 1 dictionary — U.S. Code
United States Code
4 U.S.C. § 7 — in this section (2 versions over time)
the term "first responder" means a "public safety officer" as defined in section 1204 of title I of the Omnibus Crime Control and Safe Streets Act of 1968 (34 U.S.C. 10284).