View of a rack in the U.S. Laboratory / Destiny taken during Expedition Three. Visible are: Middeck Active Control Experiment MACE Hardware stowage locker, Space Station Mass Memory Unit SSMMU hardware stowage locker, Pulmonary Function in Flight PuFF manual breathing valves / renal stone experiment supplies locker, Medium rate Communications Outage Recorder MCOR equipment locker and photographic equipment locker.
