[crypt2k]

One method would be to drop a nuke in a welded watertight capsule from the bottom of a ship when it was in a US port with a timer or other detonation device. Such a nuke could already have been dropped while the ship was in harbor.

Agreed. The sea bottom along the path of the ship should be checked for anything unusual. Chances are the plan of terrorists would be to retrieve the "package(s)" at a later time.

[Prairie Pubbie]

It would seem the terrorists have been training for sea retrieval for some time. Remember these threads...

FBI Warns of Scuba Diver Terror Attacks
Netscape Newscenter/Reuters ^ | 5.24.02

FBI Seeking Information On Scuba Training In Hunt For Terrorists
On Jun 12 3:27 AM with 6 comments

FBI questioning dive shop owners to head off terrorist attacks by scuba divers
On Jun 11 7:59 PM with 7 comments

FBI scrutinizes diving schools
On Jun 4 4:26 AM with 10 comments

Group of 5 Middle Eastern Men Purchase Special Diving Equipment In South Florida
On May 30 5:01 AM with 261 comments