that's taken about a week and a half to search effectively. >> right. >> i'm not going to do the math. but it's going to take a whole lot more time to search the size of los angeles. >> if -- of course. ten miles per day, 480 square miles to cover, that's 48 days. >> and the terrain continues to change. >> and the problem is when we go farther north, it gets deeper and deeper. 18,000 feet farther up and the bluefin can't look down that far. it can't get down that far with good resolution. >> the suggestion the area adjacent would be more north. why they're very likely going to need different technology to help out. okay. so, if this doesn't work we go to search the size of los angeles. if that doesn't work, we hesitate toechb talk about that because that is down the road. there is a suggestion that they start searching the entire southern arc that we've been looking at. >> do we even want to approach that? >> that's the size of massachusetts. >> let me do the math on that one. you're talking about 11,000 square miles.