SHOOTER. >> INITIAL AUTOPSIES ON FOUR VICTIMS OF A LUXURY YACHT SINKING LAST MONTH IN ITALY ARE REVEALING THEY DIED OF WHAT'S CALLED DRY, DRY DROWNING. LOCAL MEDIA REPORTS SAY THEY LIKELY FOUND AN AIR BUBBLE IN THE SHIP AND THEN DIED. WHEN THAT BUBBLE RAN OUT OF OXYGEN. A REPRESENTATIVE FOR THE SHIP'S CAPTAIN SAYS NONE OF THEM HAD WATER IN THEIR LUNGS OR OTHER INJURIES. THOSE VICTIMS INCLUDED A NEW YORK CITY LAWYER AND HI