The first solid rocket booster test for Space Launch System (SLS) missions beyond Artemis III seen here during a two-minute hot fire test, Wednesday, September 2, 2020, at the T-97 Northrop Grumman test facility in Promontory, Utah. via NASA http://www.nasa.gov/exploration/systems/sls/multimedia/booster-test-for-future-space-launch-system-flights2.html September 03, 2020