since both murder victims had been sexually assaulted and investigators had dna of the killer, they wanted to know whether it was gorton s dna. so they put gorton under a 24-hour surveillance. they followed him to a local roller skating rink where he took his children. undercover officers watch gorton eat pizza and drink soda from a styrofoam cup. when gordon left, an officer rushed to the table, confiscated gorton s cup and took it to the forensics lab. the sample was tested immediately. dna is like any other biological molecule, subject to degradation. one of the things that will degrade dna a little bit faster is a fair amount of heat. there were more than enough epithelial cells on the cup for testing, but this caused problems.
ocean, he thinks this is what the surface zone nearly three miles down could look like. it is dark, it is very cold. with pressure so intense it crushes a styrofoam cup to a fraction of its size. the missing plane is believed to be 4500 meters, nearly 15,000 feet down. it is flat and the sediment is still. the extreme conditions will test the limits of the u.s. navy blue fin 21, beginning the slow painstaking process of mapping the ocean floor. people need to have patience. reporter: the navy captain says one mission takes 24 hours, two hours down, 16 hours scanning, two hours up and another four hours of downloading data from the side scan sonar which maps the ocean floor. you see the traces and the
24-hour deployment. at that rate, it could take six to eight weeks to scan the area from which the pings could have emanated. we have more on the conditions so far beneath the surface. the search for mh-370 is moving into a dark corner of the world that in some ways is more mysterious than outer space. we know less about our deep ocean than we know of the moon s surface. reporter: this man and his research team took this video in the southern indian ocean. the professor of coastal oceanography at the university of western australia, thinks this is what the search zone nearly three miles down could look like. it s dark, very cold. reporter: with pressure so intense it crushes a styrofoam cup down to a fraction of its size. the missing plane is believed to be 4500 meters, nearly 15,000 feet down. it s flat and it s the
australia says this is what the search zone nearly three miles down could look like. it s dark, very cold. reporter: with pressure so intense, it crushes a styrofoam cup down to a fraction of its size, the missing plane is believed to be 4500 meters, nearly 15,000 feet down. it s flat and it s the sediment, it s silt. reporter: the extreme conditions will test the limits of the u.s. navy s bluefin-21 which is beginning the slow, painstaking process of mapping the ocean floor. patients. people need patience. reporter: u.s. navy captain mark matthews says one mission takes 24 hours, two hours down, 16 hours of scanning, two hours up, another four hours of downloading data from the side scan sonar which maps out the ocean floor. you can actually see the shapes. you kind of see the traces, the outlines of the objects.
intense, it crushes a styrofoam cup to a fraction of its size. the missing plane is believed to be 4500 meters, nearly 15,000 feet down. it s flat and the saidment is silt. reporter: this will test the limits of the bluefin 21. patience, people need to have patients. reporter: he says one mission takes 24 hours. four hours of scan is data from the ocean floor. you see the traces of the outlines of the objects. reporter: his team also took this video of what the next step, the salvage phase would look like. under water robots would pull