John Lyle has spent his professional life in pursuit of significance through service. The senior executive service member recently retired as Defense Contract Management Agency’s deputy director. He was surrounded by family, friends, mentors of the past, future leaders he inspired and his last boss as a federal employee. “I’ve been blessed over the course of the last 18 or so months to have the best deputy of my career,” said Army Lt. Gen. David Bassett, DCMA director, during Lyle’s retirement ceremony at the U.S. Army Quartermaster Museum here.