This may include Monte Carlo analysis, trajectory optimization, parameteric sweeps, or other techniques to support design decisions, conduct trade studies, assess system reliability, support mission planning operations, prepare for live flight test events, characterize system performance, and conduct other analysis as needed to support design teams. Create and/or maintain 6-DOF, 3-DOF, and/or hardware-in-the-loop (HWIL) simulations by incorporating aerodynamic & propulsion models, Guidance/Navigation/Control (GNC) algorithms, and other features to accurately characterize the performance, flight dynamics, and mission effectiveness of flight vehicles.