97 On balance, a third of revolvers identified by CRP as working for these committees and their members also have been a registered lobbyist representing defense companies. Lester Munson, BGR Group Among them is Lester Munson, a principal at BGR Group who represents a number of international and defense clients including Raytheon, Chevron and the government of Azerbaijan. Munson spent nearly two decades working on international relations issues on Capitol Hill in addition to a stint at USAID. Most recently, he served under former Chairman Bob Corker for the Senate Foreign Relations committee. Mark Esper, Former Secretary of Defense Former Secretary of Defense Mark Esper, spent the late '90s and early 2000s working his way through the Senate Foreign Relations and House Armed Services committees in addition to a couple of years as an assistant deputy secretary of defense. After spending seven years in the government relations office of Raytheon, he was tapped by President Trump as Secretary of the Army and ultimately headed up the Pentagon.