 Well, we create the day's plan. We brief the divers for the day's diving plan. If it's excavation, what units we're going to be working in, there's the movement of the baskets. We have two different kinds of dredge system. Well, they're both the same dredge system, but one is larger than the other. We have a 4-inch diameter dredge and a 6-inch diameter dredge. These are underwater suction dredges. They're powered by high-pressure water hoses, and they create an underwater kind of a venturi effect that allows material in the bottom to be basically sucked up a long pipe into a tube and then deposited in baskets, and then we rig and lift the baskets up to the deck. We bring them up and over, and then we shove all the material out of baskets into buckets and put it in screens and use the archeological practice of putting it through a quarter-inch mesh screen, and everything that's important we take out of it. So we do that. They execute the dives according to plan, and pretty much largely things have gone according to plan very smoothly. I'll also say that we have a live video feed from the bottom, so we're able to monitor what the divers are seeing at any time that they're down there working, and we're able to see what they're seeing and give them guidance as we move forward about what to do. For instance, today we were working the area of the forward cockpit flight deck around the pilot and co-pilot seat and disintegrated fuselage structures in there, so we were able to give them advice about where we wanted them to move sediment from and recover objects and sediment from, so we were providing them guidance in real-time. Absolutely. These are Navy salvage divers, deep-sea divers. We also work with Army salvage divers. For surveys, we often use SCUBA capability, but we've worked with both Army and Navy for that as well, but this is a particularly large project. The site is, there's some heavy rigging and lifting involved, and as we're bringing a lot of wreckage up topside, so we have a good platform to do it and a good dive detachment or company that are able to execute that. We have a very experienced master diver. We have two master divers here, so we're fortunate in that respect too.