2018-01-252018-01-25Unknownhttp://hdl.handle.net/2152.3/4897This image reflects William E. Thornton walking on the middeck treadmill. There are two astronauts floating in the middeck area as well.TreadmillExerciseresearchSpace MedicineAstronautinflightWilliam E. ThorntonMiddeck12.63 S83-27020 Flight, middeck TM in use, rear