CNN CNN Newsroom March 9, 2014 18:04:00
Several square miles each and you search in those square mile areas and systematically literally check off the box. you search the ocean through the grid and it's coordinated, closely coordinated because you want to make sure you don't miss anything. also the navy, submersibles will look for black box recorder, data recorder, they give off audible sound, powered by a battery. the battery lasts for about a month. they want to get it before the seawater takes its toll. everyone has a different job. it's systematic how they map out the ocean square by square order grid. >> you talk about looking ...
Source: archive.org