Final Delta IV Heavy rocket launch scrubbed just before liftoff Livescience.comRECAP Delta IV Heavy launch: Scrub of historic launch from Cape Canaveral Florida TodayFinal launch of Delta IV Heavy rocket scrubbed late in countdown Space.comDelta IV to make final flight with NROL-70 mission – NASASpaceFlight.com NASASpaceflight.comMore than 60 years of Delta rockets coming to end with final launch on Space Coast WKMG News 6 & ClickOrlando