On the first anniversary of Curiosity's landing on Mars, engineers at NASA's Jet Propulsion Laboratory are testing an even more sophisticated flight control algorithm that could allow for pinpoint landings of future Martian spacecraft. Flight testing of the new Fuel Optimal Large Divert Guidance algorithm is being conducted by JPL engineers in cooperation with Masten Space Systems, using Masten's XA-0.1B "Xombie" vertical-launch, vertical-landing experimental rocket.