NASA Booster Test for Space Launch System Rocket

The second and final qualification motor (QM-2) test for the Space Launch System’s booster is seen, Tuesday, June 28, 2016, at Orbital ATK Propulsion Systems test facilities in Promontory, Utah. During the Space Launch System flight the boosters will provide more than 75 percent of the thrust needed to escape the gravitational pull of the Earth. via NASA http://www.nasa.gov/image-feature/booster-test-for-space-launch-system-rocket-1