The U.S. government can commandere assets.

[PatekPhilippe]

I think in the event of a national emergency the U.S. government can commandere U.S. flagged ships in order to mitigate the emergency situation Get the GLOMAR Explorer to the scene to drill a relief well.

 

[Old Rocks]

The US Navy owns the Glomar Explorer, but has leased the ship out. According to Wikipedia, it is currently off Indonesia.