HALF A MILLION DOLLORS IN CHECKS FOUND THREE TEENAGERS FOUND HALF A MILLION DOLLARS IN TRAVELERS' CHECKS IN THE HILLS NEAR THEIR HOME WHEN THEY SEARCHED FOR WRECKAGE OF THE CRASHED PAN AM JET, POLICE SAID FRIDAY.> STEWART DODD, 14; HIS 13-YEAR-OLD BROTHER, ROBBIE; AND FRIEND ALAN HYSLOP, 14, SCOURED THE AREA AROUND THEIR HOME AT GRANGE TUNDERGARTH, SIX MILES FROM LOCKERBIE ON THURSDAY,DAY AFTER THE BOEING 747 BROKE UP IN THE AIR AND SCATTERED WRECKAGE OVER A WIDE AREA. THE BOYS CAME ACROSS THE CHECKS IN A BROWN ENVELOPE, SAID FORSTER DODD, FATHER OF STEWART AND ROBBIE.