We've had a couple close scrapes in our 30' Morgan Sailboat, but nothing like this!

I don't understand why the police and coast guard would block off the entrance back to the intercoastal. Was this some sort of road (water) block to catch a particular vessel or were they just trying to stop a mass exodus?

I've also never heard of a boat filling with water that fast, bilge pump or no. Was there a sea-cock left open somewhere? Or did something damage the hull of the boat and cause a leak?