; (2) require each flight crewmember to wear a mask or protective face covering and permit such crewmember to wear protective eyewear or a face shield while on board an aircraft but outside the flight deck of the air carrier or in a vehicle of the air carrier; (3) require each employee or contractor of the air carrier to wear a mask or protective face covering while within any indoor public space of a covered airport; (4) submit to the Administrator a proposal to permit flight crewmembers of the air carrier to wear a mask or protective face covering while at their stations in the flight deck of an aircraft of the air carrier, including a safety risk assessment with respect to such proposal; (5) provide flight and cabin crewmembers, airport customer service agents, and other employees whose job responsibilities involve interaction with passengers with masks or protective face coverings, gloves, and hand sanitizer and wipes with sufficient alcohol content, and provide training on the proper use of such items and equipment; (6) ensure aircraft, including the cockpit and cabin, operated by such carrier are cleaned, disinfected, and sanitized by cleaners who are not flight or cabin crewmembers after each use in accordance with Centers for Disease Control and Prevention guidance; (7) ensure enclosed facilities owned, operated, or used by such air carrier, including facilities used for flight or cabin crewmember training or performance of indoor maintenance, repair, or overhaul work, are cleaned, disinfected, and sanitized frequently in accordance with Centers for Disease Control and Prevention guidance; (8) provide air carrier employees whose job responsibilities involve cleaning, disinfecting, and sanitizing aircraft or enclosed facilities described in paragraphs (6) and (7) with masks or protective face coverings and gloves, and ensure that each contractor of the air carrier provides employees of such contractor with such materials