FRIENDSWOOD, Texas (KTRK) -- Oohrah! Take it from our Marines to go into the flood zone and rescue people.U.S. Marines out of Galveston are using the first clear day since Harvey's deluge to find people trapped by the flood waters today.More than 60 Marines are using 11 assault amphibious vehicles to get around the flooded streets. The vehicles can float in water when needed.The company staged in Friendswood at first light ahead of their rescue mission. They are expected to make their way northward for additional rescues.