Participants conduct simulated space operations during the fifth international space experiment, Global Sentinel 2018 (GS 18), Sept. 19-28, at the Lockheed Martin Center for Innovation in Suffolk, Virginia. The event provided an opportunity to develop and implement processes for partners from Australia, Canada, France, Germany, Italy, Japan, the Republic of Korea, Spain, the United Kingdom, the United States, and commercial entities to collaborate on combined space situational awareness (SSA) operations in order to enhance the quality and availability of satellite tracking information.