While we continue building excitement for Orion's next launch attempt tomorrow morning at 7:05am ET, let's look at other great progress being made at NASA's Kennedy Space Center. Pictured here, a look inside the Vehicle Assembly Building (VAB), where the Ground Systems Development and Operations Program and support contractors are busy upgrading the massive building to house the Space Launch System (SLS). SLS will be the largest launch vehicle ever built and will fly Orion on its next trip to deep space. #Orion #SLSInspires #GSDO #JourneyToMars #InsideNASA