Eye Witness No.81: School for Frogmen: HAS of heads of two scuba divers approaching camera boat in water, the two men climb on board. Shots of navy scuba divers climbing on barge, removing equipment and climbing down into water. Rear shot of three scuba divers looking at navy launch in background. Shots of sailor with signal flag, of flag meaning that diving is going on, fluttering from shrouds. Shots of deep sea diver climbing down ladder and into water, climbing up again. LACU of navy officer speaking.