. >> they have to survive saltwater eeimmersion and immersion in 20 feet of water. we've been successful in recovering data from submerged aircraft. >> so far they've not been asked to participate. because airbus is a french company, that country's equivalent of the ntsb has people in the area. >>> they're coming to grips with what authorities are calling its worst mass murder ever. police say a man with a long criminal record killed eight people and then killed himself. two of the dead are young children. police say the kills appeared to be planned and deliberate domestic violence. >> it is a tragic day for edmonton, and our thoughts go out to the community as we all come to terms with the senseless mass murder of eight people. >> reporter: police discovered eight bodies at two homes monday. the ninth matched the description of the suspect who was reported to be depressed and suicidal. >>> the shooting death of a woman by her own toddler is being called tragic this morning. police say 29-year-old veronica rutledge was shopping at walmart with four children tuesday.