[Eva]

Did you see the announcement that the US Coast Guard is training a team of special forces to board vessels with bomb sniffing dogs before they enter the US ports? This is most definitely the reason for these precautions.

[Robert357]

Did you see the announcement that the US Coast Guard is training a team of special forces to board vessels with bomb sniffing dogs before they enter the US ports?

Yes and they are setting up 4 swat-like fast response teams one of which is going to be in Seattle.