CNN Anderson Cooper 360 December 31, 2014 01:23:00
Carefully. they can be very effective using handheld locators a diver uses. they'll be able to map this site similar to the way dave had mentioned. not with visual but with multisounder. so the entire site is mapped out. we don't know yet whether we're talking about small concentrated debris field or one that's more spread out. but if it's small and concentrated it may only be 200 meters by 400 meters. a multib echo sounder can map that and centimeter type resolution before anybody touches anything and then you'll go in and start dealing with bodies in the black boxes. >> extraordinarily diffi...