Biden says he's praying for the victims' families
Former President Joe Biden wrote on social media that he's "praying for the families of the victims who tragically lost their lives in the plane and helicopter crash."
"We are immensely grateful to the brave first responders and emergency personnel on the scene," he added.
Former President Barack Obama wrote on social media, "Our hearts break for the families who lost loved ones in the tragic plane and helicopter crash."
"Michelle and I send our prayers and condolences to everyone who is mourning today, and we’re grateful to the first responders who are doing everything they can to help under extremely difficult circumstances," Obama said.