Sept. 12, 2014 – United Launch Alliance technicians inside the Space Launch Complex 37 Horizontal Integration Facility monitor progress as the second stage of a Delta IV Heavy rocket is mated to the central core booster of the three booster stages for the unpiloted Exploration Flight Test-1.
Sept. 12, 2014 – United Launch Alliance technicians inside the Space Launch Complex 37 Horizontal Integration Facility monitor progress as the second stage of a Delta IV Heavy rocket is mated to the central core booster of the three booster stages for the unpiloted Exploration Flight Test-1.
Image credit: NASA/Daniel Casper