One of the Virginia State Troopers that died during yesterday's violent rallies in Charlottesville was a graduate of Germantown High School.
Rosenthal affirmed the crash on Twitter.
Saturday's rally was the most recent occasion drawing white patriots and conservative activists from the nation over to this Democratic-voting town - an improvement accelerated by the city's choice to expel images of its Confederate past.
The helicopter, a Bell 407, was assisting with public safety resource efforts for the riot in Charlottesville, police said. He first joined the Virginia State Police Aviation Unit in 1999.
Cullen is survived by his wife and two sons, according to the release.
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Cullen had over 20 years of service with the state police and is survived by a wife and two sons. He graduated from the Virginia State Police Academy in August 2004 as a member of the 107th Basic Session.
He would have turned 41 on Sunday.
The officers had been dispatched from the State Police base in Lynchburg in late morning to provide surveillance and tactical support for law enforcement dealing with a day-long violent and racially charged protest in Charlottesville that left one dead and dozens injured. Trooper-Pilot Bates was 40.
In the most dramatic incident, the auto rammed into a crowd of counter-protesters, sending people flying and to the hospital.
The white nationalists had descended on Charlottesville with torches, chants, and Nazi salutes because they are upset by the vote to remove a Robert E. Lee statue from Charlottesville's downtown area.