an anonymous tip comes into the falmouth police that there are more than soft drinks being served athome. sergeant george savidge was on duty. >> when i pulled up to the house, a gentleman came out and identified himself as mr. spencer. and he said that he was hosting an alcohol- and chemical-free party. >> reporter: sergeant savidge leaves, but partygoers keep arriving. >> i saw lots of people coming with just boxes and boxes of beer in the woods. >> reporter: so when the police first came to your house, you already knew things were getting a little dicey. >> mm-hmm. >> reporter: it was a little more than you could handle. >> yes. >> reporter: why aren't you walking through the house saying "time to go home?" >> i felt like i invited these kids to our home to celebrate, and i didn't have clear evidence that they were all drinking. i also really felt at the time that if i walked around and said "all right, everybody, we're shutting it down" they'd run to their cars or do something that's more dangerous. >> reporter: so you thought it was safer to let them stay and continue to party a

navy oceanographer and fred hague, falmouth scientific incorporated.rning. >> good morning, carol. >> good morning. thank you for being with me. i want to talk about these sonar buoys. are they dependable, fred? >> yeah, they've been very dependable. they've been used for submarine reconnaissance for years. they're just using that technology that they've used for years, again, for submarine reconnaissance for a search and recovery mission. >> so captain gurley, now they've had five separate instances where they've picked up sound from juunderneath the water. how hopeful should we be? >> well, carol, i'm very hopeful that they are on the right place now. when you look at the accumulation of evidence and the repeated pings that all match, all the specifications we expect, i am confident they are on the right place. the fact that the p-3s now think they may have picked up something is even better news. that means the batteries are still alive. and it lets them refine the area they're going to have to look on the ocean bottom even better because it's a sma