Submarine Involved In Somalia Attack?

There's an interesting tidbit in this AP report on today's attack against a High-Value Target in Somalia:

Another defense official told The Associated Press that the strike used one or more Tomahawk cruise missiles fired from a U.S. submarine off Somalia's coast. The official spoke on condition of anonymity because he wasn't authorized to discuss details.

Normally, at this point I'd go through the open source reports of submarine movements and write about which boat may have actually been involved in the attack, but it turns out that Galrahn has already done that. He names USS Norfolk (SSN 714) as the most likely firing platform, with USS Montpelier (SSN 765), deployed with the Harry S. Truman Strike Group, as another candidate. Since Norfolk was described in December as leaving on a six month "independent deployment" to the CENTCOM AOR, I'd say he's probably on the mark.