With the boosters for the 1st mission of @NASA_SLS filled with propellant, casting for the rocket’s second mission is now underway in Utah pic.twitter.com/3s8LayBLtx— Orbital ATK (@OrbitalATK) July 19, 2017
With the boosters for the 1st mission of @NASA_SLS filled with propellant, casting for the rocket’s second mission is now underway in Utah pic.twitter.com/3s8LayBLtx