US officials described the attacks on Qeshm Island as limited and defensive, according to CBS, the BBC's US partner.
Papua New Guinea police had earlier dismissed speculation that the 32kg object was "merely a dummy".
Annie Andrews is projected to defeat Darline Graham, who was handpicked by President Trump to take her brother's seat after his death.
Ossoff is seen as a potential leading contender for the Democratic nomination for president in 2028 if he throws his hat in the ring.
The NTSB said because the parts were found far from the accident site, they fell off before the crash.
At least 69 people were killed and dozens injured in the collision south of the capital, Madrid.
Planes in Poland, Spain, Bulgaria and Italy have been checked for explosives following separate threats.
At least 38 people are killed in 24 hours and Ukraine's Volodymyr Zelensky warns dozens more could be trapped under rubble.
The former European champion and two-time Olympic runner had been diagnosed with stage four bowel cancer.