Default in such a large country is impossible, it has many allies and creditors who will help prevent this. A lot of things revolve around the United States, and such a default takes place only if it is, as you wrote, technical. In fact, it doesn't mean anything and it doesn't make sense to move from place to place and so on.
I'm already expecting to read some statements like this. Although it is indeed hard to imagine that USA, a powerful country, will undergo such default but being a large country with lots of allies and creditors will certainly not help them prevent it from happening or at least cannot help the USA in this instance. Since the USA reached its debt-ceiling, I think it is already safe to assume the likelihood of having a default due to their present situation plus there's the move from China and Russia of using the Chinese Yuan in purchasing Petrol which could put some fuel to the fire in-relation of the current situation of the USA.