The president has picked the Army's top acquisition officer to lead the Army Materiel Command, the Defense Department announced today. As expected, Lt. Gen. Paul Kern, the military deputy to the Army acquisition executive since July 1997, is the administration's choice for the four-star AMC slot. If confirmed, he would replace Gen. John Coburn, who has led AMC since May 1999. Coburn plans to retire later this year, according to AMC. Kern was the commander of the 4th Infantry Division,...