; (B) employees of employers in the paramedic and emergency medical services, including such services provided by firefighters and other emergency responders; and (C) employees in other sectors and occupations whom the Centers for Disease Control and Prevention or the Occupational Safety and Health Administration identifies as having elevated risk. (2) Consultation In developing the standard under this subsection, the Secretary shall consult with professional associations and representatives of the employees in the occupations and sectors described in subparagraphs (A) through (C) of paragraph (1) and the employers of such employees. (3) Enforcement discretion If the Secretary of Labor determines it is not feasible for an employer to comply with a requirement of the standard promulgated under this subsection (such as a shortage of the necessary personal protective equipment), the Secretary may exercise discretion in the enforcement of such requirement if the employer demonstrates that the employer— (A) is exercising due diligence to come into compliance with such requirement