ULA Scrubs First Delta IV Heavy Launch, Sets New Attempt for Early Thursday Written 21 June 2023

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A United Launch Alliance Delta 4-heavy rocket prepares to launch from Cape Canaveral Space Force Station's complex 37. | Associated Press–©

Florida Today reports, “A first launch attempt of the United Launch Alliance Delta IV Heavy rocket for the NROL-68 mission was scrubbed early Wednesday, June 21. The company cited ‘an issue with a ground systems pneumatic valve’ at Cape Canaveral Space Force Station as reason for the scrub.” Teams “are now set for another launch attempt at 3:25 a.m. EDT, Thursday, June 22, at Launch Complex 37 to send a classified payload for the National Reconnaissance Office to orbit.” 
Full Story (Florida Today)