ATLANTA -- In order to "win in a complex world," the Army needs to satisfy first-order principles that address the ever-changing global environment, according to the head of U.S. Army Training and Doctrine Command. Gen. David Perkins outlined these goals for an audience at the Army Aviation Association of America's annual conference: maneuver from a variety of locations and domains; present multiple dilemmas to the enemy; operate dispersed while maintaining mutual support; and provide commanders with multiple options. Perkins emphasized...