First Pontoon Lowered to Sunken Submarine -- The first pontoon to be lowered in attempt to salvage sunken submarine Squalus goes over the side of the rescue ship falcon. Navy officials salvaging the sunken sub announced last night an unexplained wire jam would force them to raise two pontoons which had been attached to the craft. The jam was discovered soon after a second pontoon had been sunk above the submarine, which plunged to the bottom May 23 with the loss of twenty-six lives. The latest t