Evolving technologies necessary for Unmanned Aircraft Systems (UAS) to safely avoid other aircraft while in flight were tested using NASA's remotely piloted Ikhana aircraft. Equipped with Detect-and-Avoid (DAA) sensors working with airborne- and ground-based computers, Ikhana made 11 flights involving 200+ scripted encounters with approaching aircraft. Actions taken by Ikhana included taking action on its own via programmed maneuvers and alerting remote pilot to take action.