CAPE CANAVERAL, Fla. – After working to fix a ground support equipment issue United Launch Alliance has set a new targeted liftoff date to launch a national security satellite on its Delta IV Heavy rocket.The last attempt in August was called off after the countdown reached T-0 resulting in a fiery abort when the engines lit up but the rocket remained on the pad.ULA CEO Tory Bruno explained on Twitter a torn diaphragm in one of three pressure regulators on the launchpad caused the computer-controlled scrub seconds before liftoff.[TRENDING: ‘God, forgive me:’ Mom arrested on murder charge | Trump pushes for 2nd round of $1,200 direct payments | Daylight Saving Time debate]“Torn diaphragm (in the regulator), which can occur over time,” Bruno.