Good "action" shots of submarines are fairly rare; usually, the best you'll see is a submarine pulling into port -- like
this photo of
PCU New Hampshire (SSN 778) pulling into PNSY ahead of her commissioning
this weekend.
That's why I like
this shot of USS Hampton (SSN 767), taken last week as she submerged following her departure on WestPac:

Looks like a good dive; the front two sets of MBT vents are already underwater. Do any of you have any stories about diving evolutions that didn't work out so well?