You can watch the live launch of the spy satellite on Saturday.

The Delta IV Heavy is going to lift off on Saturday. The mission was called NROL-91. You can watch it here or via the company.

The nation's spy satellites are built and operated by the NRO. The NROL-91 mission is classified and little is known about the satellite that will be lofted.

The Delta IV Heavy is powerful.

Delta IV Heavy rocket in hangar ahead of launch

The last Delta IV Heavy rocket to launch from the West Coast is seen inside its vertical assembly building at Vandenberg Space Force Base in California for a Sept. 24, 2022 launch.  (Image credit: United Launch Alliance)

We are on the verge of launching another national capability into space. This will be the 6th national security launch of the year. The fruits of our labor will be seen in a few days, according to a statement from the Space Force program executive officer.

In a time of increasing risks and threats, these launches are critical for our nation. Every member of the launch team knows what's at stake and works with both care and efficiency to prepare for the launch.

The last Delta IV Heavy liftoff will take place on Saturday. According to company representatives, ULA is replacing its hulking rocket with a new vehicle that could debut before the end of the year.

After Saturday's flight, there are two Delta IV Heavy missions remaining. If all goes well, both will launch from Florida's Space Coast.

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