[ZenGum]

The US is not in danger of losing its global power status through not having enough ships in its Navy. You have more navy than the rest of the world combined.
You are in danger of losing your superpower status through going bloody bankrupt. Maintaining that enormous military is a significant factor in your fiscal problems.
Sure, it took several days to get a carrier into position for the Libya operation. That was OKAY. Things worked. It was quick enough.