2018-01-242018-01-24Unknownhttp://hdl.handle.net/2152.3/4861This image reflects William Thornton wearing the earpiece for the STS Space Transportation System treadmill.William E. Thorntonear pieceearpieceTreadmillSTSSpace Transportation SystemSpace MedicineresearchExercise12.48 S84-43728 STS TM, with earpiece, on ear