"In court Thursday, Grossman's defense team tried to persuade Judge Joseph Brandolino to allow them to recreate in the courtroom the two air bags deploying as they had in Grossman's Mercedes SUV at the time the boys were hit.
....
After hearing from airbag and seatbelt expert William Broadhead that when an airbag deploys, 'it's incredibly loud and explosive, like setting off a cherry bomb' the judge canned the idea of a demonstration in the courtroom and said jurors could watch a video instead.
But he did say yes to a courtroom demo of the 'seatbelt pretensioner' that tightens seatbelts in an accident.
Like airbags, it also fires off a controlled explosive device to deploy but it's a much smaller charge.
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Broadhead told the court that Grossman's car had a total of five 'pyrotechnic devices' - two for each airbag and one for the seatbelt pretensioner.
When they go off, he said: 'They stun. You don't know what to do. You don't know if it's a bomb or a sniper….you jump out of your skin.'
In the case of Grossman's accident Broadhead said she' would not be able to distinguish between a pedestrian impact and the airbag deploying."
Dorsa Khoedami - who was 16 at the time of the horrific crash - testified in Rebecca Grossman's murder trial on Thursday that she had 'heard a very loud noise' followed by screaming.
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