During a "Powering Exploration Mission-1" ceremony in the Neil Armstrong Operations and Checkout Building high bay at NASA's Kennedy Space Center on Nov. 16, 2018, Amy Marasia, Orion Crew Module assembly lead for Exploration Mission-1 (EM-1), explains the next steps in processing Orion and the European Service Module (ESM). The event was held to mark a major milestone, the arrival of the European Service Module for Orion's Exploration Mission-1. The service module, built by the European Space Agency, will supply the main propulsion system and power to the Orion spacecraft during 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.