Sen. Elizabeth Warren (D-MA), a longtime critic of the close relationships between government officials and defense contractors, has lifted holds she previously placed on the nominations of Frank Kendall to be Air Force secretary and Heidi Shyu to be the Pentagon’s technology chief after successfully getting the nominees to extend their government ethics pledges. Two sources, one of whom is a congressional aide familiar with the matter, confirmed Kendall and Shyu have agreed to extend their ethics agreements and industry...