Inside the airlock in the Neil Armstrong Operations and Checkout Building high bay On Nov. 6, 2018, European Space Agency (ESA) and Airbus engineers and technicians watch as a crane is used to uncrate the ESA's European Service Module (ESM) at NASA's Kennedy Space Center in Florida. The ESM will supply the main propulsion system and power to the Orion spacecraft for Exploration Mission-1 (EM-1), a mission to the Moon. The ESM also will house air and water for astronauts on future missions. EM-1 will be an uncrewed flight test that will provide a foundation for human deep space exploration to destinations beyond Earth orbit. EM-1 will be the first integrated test of NASA's Space Launch System, Orion and the ground systems at Kennedy.