I have read reports and seen specials on TV that say man has never landed on the moon.
If the vessel being boarded is flying the flag of another nation, permission from that nation must be granted before the boarding can occur. After bobbing around in the Carribean for many patrols, I can assure you that destruction of the vessel is not normal policy. Usually they are seized in the same way most police departments do, and is later auctioned off.
In the past the Coast Guard has only been successful at stopping a vessel which chooses to flee approximately 10% of the time. This was due to the helo's being totally unarmed, and the Cutter's agonizingly slow. Recently that figure has risen dramatically, as some helicopter crews specifically engaged in counter drug ops, have begun using 50cal rifles to disable the engines of the go-fasts.
All this being said I do not beleive the Coast Guard should be doing counter drug operation missions. We are terribly underfunded, and stretched to thin on our other missions of search and rescue, National defense, and maintaining the millions of aids to navigation. Also compared to other agencies like DEA and customs, our training is inadequate in force operations. For far too long we have been trying to do more with less.
If you ask anyone in the Coast Guard why they joined, the answer will almost certainly be something like, I want the chance to help people. They are there for much the same reason people become a fireman. I have never met a Coastie who joined for the chance to seize property, or sink ships. Every person who has ventured onto the ocean is better off for the Coast Guard having been there to help them.
As far as drug runner's trying to sink a Cutter or shoot down a helo, I won't even dignify that with a response.
Coastie