The Air Force is set for Thursday’s launch of the National Reconnaissance Office (NRO) payload NROL-37, according to a service statement.Launch window opens at 1:59 p.m. EDT at Cape Canaveral Air Force Station, Fla. Launch will take place on a United Launch Alliance (ULA) Delta IV Heavy rocket. The largest of the Delta IV family, the Heavy version features three common booster cores mounted together to form a triple-body rocket.ULA said late Tuesday there was a 40 percent chance of…