Boeing, NASA and U.S. Army teams rehearse safely bringing the CST-100 Starliner spacecraft home to Earth on Wed., June 6, 2018, at the U.S. Army's White Sands Missile Range in New Mexico. During the detailed landing simulation, engineers, technicians and spaceflight specialists worked through tight timelines and intense heat running through simulations of the spacecraft's landing and recovery, an operation that will cap each Starliner mission. For flight controllers at Mission Control in Houston, the simulation offered the chance to evaluate their own processes and rehearse everything from undocking the Starliner from the space station to communicating with the recovery teams in the field.