; and (2) include best practices for the proper handling and dispatch of a report of an emergency described in each of subparagraphs (A), (B), and (C) of section 520O(a)(1) of the Public Health Service Act, as added by section 2, including best practices for training in— (A) the principles and techniques in processing calls for persons who— (i) are experiencing a mental health crisis; (ii) may have a mental illness, a substance use disorder, a co-occurring mental health and substance use disorder, or an intellectual or developmental disability; or (iii) otherwise appear to need the immediate support of mental health professionals; (B) the principles of deescalation; and (C) developmentally appropriate techniques. (c) Timeline; updates The Secretary of Health and Human Services shall— (1) not later than 1 year after the date of enactment of this Act, develop and publish initial best practices under this section; and (2) not less than every 5 years thereafter, develop and publish updated best practices under this section. (d) Definition In this section, the term first responder has the meaning given to such term in section 520O of the Public Health Service Act, as added by section 2. 5. Rules of construction (a) Hiring of law enforcement officers Nothing in this Act (or the amendments made by this Act) shall be construed to remove, supplant, alter, or limit the authority of States, public agencies, or municipalities from hiring or recruiting career law enforcement officers (as defined in section 1709 of the Omnibus Crime Control and Safe Streets Act of 1968 ( 34 U.S.C. 10389 )) to engage in or supervise the prevention, detection, or investigation of violations of criminal laws when appropriate. (b) Circumstances of imminent or immediate danger Nothing in this Act (or the amendments made by this Act) shall be construed to impede, supplant, alter, or limit the use of career law enforcement officers during emergencies— (1) which such career law enforcement officers may be best suited to handle