rocketstem.org
Delta IV Heavy launches with classified payload
The largest and most powerful American rocket currently flying, United Launch Alliance’s Delta IV Heavy, lifted off from Launch Complex 37 at the Cape Canaveral Air Force Station at 1:51 p.m. on June 11, 2016 on the NROL-37 mission after a 48-hour delay due to weather. The payload for this launch was a classified satellite for ...