; (2) ensure air traffic control facilities are cleaned, disinfected, and sanitized frequently in accordance with Centers for Disease Control and Prevention guidance; and (3) provide employees of the Administration whose job responsibilities involve cleaning, disinfecting, and sanitizing facilities described in paragraph (2) with masks or protective face coverings and gloves, and ensure that each contractor of the Administration provides employees of such contractor with such materials. (b) Source of equipment The items described in subsection (a) may be procured or provided under such subsection through any sources available to the Administrator. 50206. National plan for aviation system preparedness (a) In general Not later than 1 year after the date of enactment of this section, the Secretary, in coordination with the Secretary of Health and Human Services, the Secretary of Homeland Security, Director of the Centers for Disease Control and Prevention, and the heads of such other Federal departments or agencies as the Secretary considers appropriate, shall develop and regularly update a national aviation preparedness plan to ensure the aviation system is prepared to respond to epidemics and pandemics of infectious diseases. (b) Contents of plan A plan developed under subsection (a) shall, at a minimum— (1) fully incorporate elements referenced in the recommendation of the Comptroller General of the United States to the Secretary of Transportation titled Air Travel and Communicable Diseases: Comprehensive Federal Plan Needed for U.S. Aviation System’s Preparedness , dated December 2015 (No. GAO 16–127); (2) clearly delineate the responsibilities of the sponsors or operators of covered airports, air carriers, and Federal agencies in responding to an infectious disease epidemic or pandemic