Transcript for SpaceX launches secret satellite codenamed Zuma
We're gonna go through four events here in rapid succession. And those are in order Nikko. Stage separation STS one and that the inspector. Amigos stands for main engine cut off that's when the first stage stops firing. Their follow stage separation went first and second staged apart from each other. SCS one is the third event that since her second engine start and second stage begins firing. And in the fourth event in that sequence use the boost factor and that's when first stage begins firing again to start its subject three back to landing zone one. About sequence Booker. About fifteen seconds in duration. Starting about fifteen seconds from now.
This transcript has been automatically generated and may not be 100% accurate.