It actually breaks down a little further. There are unopposed, non-compliant, and opposed boardings. Unopposed is just like it sounds, we call the vessel, they agree to let us come search them, we do the search and go home. Non-compliant is where passive-aggressive measures are taken to prevent boarding. They may say we can't board them, or they say we do but when we get there they've got the perimeter of the deck strung with barbed wire or something. Opposed means they shoot at us. The amount of boardings that need doing these days far outpaces the SEALs ability to keep up. With that in mind, the tasking for unopposed and non-compliant boardings has largely shifted to the blue water Navy. I was a part of one of the first non-compliant teams that was qualified as such. The Navy also experimented with taking regular sailors and training them in HVBSS, which is VBSS done from helos. That was short-lived however. The other tasking remains in place and there are ships that go on deployments to the Persian Gulf with a mission largely consisting of Maritime Interdiction Operations (MIO). So the VBSS teams are made up of volunteers from the ships crew who have to pass a few tests and then make it through the training. I do know that the training has changed drastically since I went through. When I went through the NCVBSS course we had a decent amount of shooting, defensive tactics every morning, basic medical training, and a decent amount of room entry/clearing training. However, when we ran an FTX for the regular Navy brass, they did not like the aggressiveness we displayed and told the instructors (almost all former/current SOF) that they needed to tone it down. The Instructors called bullshit and a large number of them quit after that.