U.S. Navy Cmdr. Mark Yehl is currently the acting director for the Naval Staff College. Cmdr. Yehl is a SH-60B pilot and has served in a variety of operational tours including the Assistant Air Officer USS Essex (LHD 2) in Sasebo, Japan and department head at HSL-48 while deploying in USS San Jacinto (CG 56). His shore tours include instructor pilot in HSL-40, Training Officer at Helicopter Maritime Strike Wing, Atlantic, Air Operations Officer at Fifth Fleet and Exercise Director at Fourth Fleet. Cmdr. Yehl enlisted in the U.S. Navy in September 1988 and is a native of Orrville, Ohio.