[VRWC_minion]

I think the fact that they released the boat, cargo and crew is a pretty good indication that there is no biological threat

Then why search for pleasure boat ?

[Coop]

Then why search for pleasure boat ?

Witnesses to the event would be my guess. Plus, to be thorough. The possibility does exist that this was some type of attack. The barge could be safe, yet the pleasure craft infected.

But if you're a terrorist, why spray along a river with two boats when you could hit a stadium, farmers market, county fair, etc.?