Following up on @thejackbeyer's find, I can confirm that Deimos and Phobos are the names of two oil rigs purchased by SpaceX – likely for conversion to support Starship operations.
ENSCO 8500 and ENSCO 8501 were the previous names of the rigs. They are nearly identical twins.
BOOM!
Both rigs were purchased by Lone Star Mineral Development LLC which is either a SpaceX subsidiary or a subsidiary of a company that SpaceX is leasing the rigs from (like SpaceX does with the droneships).
Lone Star Mineral Development LLC was incorporated just before the rigs were purchased, so if I had to bet, I believe this is a SpaceX subsidiary, but maybe someone else can confirm.
Cannot believe I did not find this sooner! The name changes of the rigs are public record and can be found here, along with a bunch of other details, if anyone is curious. Just search for Deimos and Phobos.
If you think we didn't do a quick Google search, go "hey, this actually might be related to the Shell Deimos project," you are wrong. We did. It is not related.
Is the undisclosed buyer SpaceX? I have found no indisputable evidence other than a Deimos sign appearing on the side of the rig (spotted by @thejackbeyer). So yes, there is some uncertainty, but it seems very possible.
Looks like SpaceX may be making a pressurize to failure attempt.
Watch Live:
Tons of condensation coming from the bottom now. This might finally be happening. Still could have an issue at any time of course, but looking promising!
After something like 18 hours of streaming, FROST IS FORMING!
The lack of development funding means that SpaceX has to price funding for a Mobile Service Tower, extended payload fairing, etc into their pricing for NSSL Phase 2.
I wonder if this could have hurt SpaceX's NSSL Phase 2 bid, as their pricing probably ended up being very similar to ULA. Thus, SpaceX's usual advantage on cost might have been wiped away.
SpaceX president Gwynne Shotwell is the SpaceX representative.
"This was an incredibly smooth mission," says Shotwell. Notes that this is just the beginning of regularly bring people to and from low earth orbit.
@Astro_illini, commander for Crew-1 (first operational mission with Crew Dragon), notes that this mission went so smoothly it did not seem like SpaceX's first crewed misison.