"Successful Vulcan Launch Showcases Advanced Solid Rocket Boosters"

The first launch of United Launch Alliance’s Vulcan Centaur also served as a successful demonstration of the GEM 63XL solid rocket boosters developed by Northrop Grumman, which produced over 900,000 pounds-force of thrust and are the largest monolithic solid rocket boosters built. Northrop Grumman is now focused on scaling up production of the GEM 63XL to meet the demand for Vulcan launches, and is looking to incorporate technologies tested through its SMART Demo program into the boosters.