What I would add is we have a good sense of what they are. Finding more on the ground will help close some of that gap.
However, I think we all know that China likes to challenge the international order. China is more assertive in its foreign policy. China is also building military capabilities to assert that foreign policy, so we have to be concerned.
As I mentioned before, some of the answers we have are that this object was unauthorized and unwanted. We have to make more sense of this. We have to make sure we're prepared for this. That's what I'll answer for now.