Kenneth Krieg is preparing to take the helm of the Pentagon's massive weapons acquisition operation as soon as the end of this week, according to Defense Department officials. Following late-night Senate confirmation on May 26 to be the next under secretary of defense for acquisition, technology and logistics, Krieg is expected to be sworn into the post later this week or possibly next week after Defense Secretary Donald Rumsfeld returns from a trip to Asia. "There will be a transition...