Human Systems Integration looks at how systems are designed in relation to humans and their environment. It can include hardware, software, processes, human roles, and safety optimization. With regards to space, human systems integration is essential to the safety of an astronaut; everything from the International Space Station (ISS) to the Extra Vehicular Activity (EVA) suit is made to help astronauts safely survive in outer space. The Aerospace Human Systems Laboratory investigates a variety of space systems such as the EVA suit and the Liquid Cooling and Ventilation Garment (LCVG).