Delta IV Heavy • NROL-37

A United Launch Alliance Delta IV Heavy rocket will launch a classified spy satellite cargo. The largest of the Delta 4 family, the Heavy version features three Common Booster Cores mounted together to form a triple-body rocket. Launch postponed with "TBD" status from July 4, 2016, due the unspecified reasons.

UPDATE 09/06/2016 22:07: launch scrubbed due the poor weather - new launch time is 11th June 2016 17:51 GMT