McArthur rotates the CHeCS Rack during Expedition 12

ISS012-E-10806 (9 December 2005) --- Astronaut William S. (Bill) McArthur Jr., Expedition 12 commander and NASA space station science officer, rotates the Crew Health Care System (CHeCS) rack in order to access the Avionics Air Assembly (AAA) air ducts during in-flight maintenance (IFM) in the Destiny laboratory of the International Space Station.