BP Attempting to Install New Containment Cap

So far, so good as bp attempts its latest fix on that leaking well in the Gulf. 

The company is installing a new containment cap that could eventually capture all of the oil.

It's been a race to take advantage of a good weather forecast and things have been moving quickly.

So far no snags, but even though everything seems to be going well, the intricate process is far from over.

A mile beneath the surface, signs of progress.

"Late last night we were successful in putting what we call a transition tool into the top of the lower marine riser package of the well bore," says Adm. Thad Allen (Ret.), National Incident Commander.

On top of that tool, robotic submersibles spent the morning working on installing the new, better fitting cap. 

Engineers are expected to start testing the system later today.

"I think we'll know substantially more than we have in the entire event to date once we get that cap on and are able to do the well intercity test. Where that takes us remains to be seen, but we are going to know a lot more than we did before by tomorrow I believe," says Allen.

It could still take several days to complete the process, and may be another two weeks or so before the system is up to full capacity. 

-Kristen Dahlgren, NBC News