19 minutes before launch and the countdown entered a built-in hold as planned. There are no weather or technical impediments to liftoff at 7:05 a.m. EST. This pause will last 15 minutes and allow the launch and flight teams to conduct their polling to give the final go-aheads to begin the Orion mission. The countdown will resume at the T-4 minute mark at 7:01 a.m. and it will mark the start of the terminal countdown phase, the last before liftoff. Today’s launch window extends to 9:44 a.m.