threatening hurricane. look for more live reporting on "america this morning," abc's sam champion leads our coverage on "good morning america." switching gears a little bit now. a defiant moammar gadhafi has issued a new audio message urging his supporters to destroy the rebels he calls, quote, the rats. a spokesman insists gadhafi is safely in hiding and still firmly in charge of his forces. the leader continues to elude the rebels. they believe he got away using an elaborate series of tunnels underneath his compound in tripoli. corrections offifirs in florida say casey anthony has begun her one-year probation for check fraud. they say she was polite and cooperative during a meeting with her probation officer and promised to meet all the conditions they set for her. as for where she is serving her probation, that will stay secret because of death threats being made against her. in western new york, a police helicopter pulled off a dramatic rescue of a construction crew. the workers were repairing a highway bridge when a severe thunderstorm sparked a flash