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teen trayvon martin. he says his concern is for the boy's grieving parents. >> my main message is to the parents of trayvon martin. you know, if i had a son he'd look like trayvon. >> meanwhile, more protests are planned in cities across the nation today. last night thousands rallied in sanford. that's the central florida town where martin was killed. protesters are calling for the arrest of the shooter, neighborhood watch captain george zimmerman. zimmerman says he acted in self-defense. 17 counts of murder, those are the main charges expected today for army staff sergeant robert ...

Rita has never been done at this depth. >> when will we know whether or not it has succeeded? >> they plan to put it down some time later this weekend but one of the problems we have is we're bringing warm oil product which is also mixed with natural gas and water up from 18,000 feet and as it passes through the sea floor it's surround by water in low 30 degrees. there's a chance that the gas could actually form into ice crystal crystals in the pipe so they're actually creating a jacket around the drill pipe and pumping surface water at 78 degrees down to keep it warm to preclude that from hap...