Spaceflight training for Apollo era and Space Shuttle missions was designed to train crew on specific tasks for their short duration missions. The training mottos included "practice, practice, practice" and "hammering it in." However, training for longer duration ISS (International Space Station) missions has been more challenging. There is clear documentation that tasks and skills trained pre-flight are not all retained throughout the mission, and this lack of training retention is augmented with real-time ground support. NASA does not currently have a training design that supports semi-autonomous to autonomous mission operations. The current design of a manned Mars mission calls for a 32-month long mission and asynchronous communication involving long delays.