Expedition 10 Rehearses for Wednesday's Spacewalk<br /><br />Expedition 10 Commander Leroy Chiao and Flight Engineer Salizhan Sharipov<br />conducted their last full day of spacewalk preparations on Monday. They<br />participated a full dress-rehearsal in the Russian Orlan spacesuits, which<br />included biomedical communications checks.<br /><br />They will enjoy an off-duty day Tuesday as they adjust their sleep schedule<br />for Wednesday's spacewalk.<br />Chiao and Sharipov are scheduled to begin the 5.5-hour excursion at 1:25<br />a.m. CST (0725 GMT) Wednesday. Their tasks include installing a work<br />platform and experiments on the outside of the Station.<br />NASA TV's coverage of the spacewalk begins at midnight CST (0600 GMT)<br />Wednesday.