Shaffer's loved ones gave their blessing to the vigil, set to begin at 7:30 p.m. between Exits 2 and 3, organizer Chris "Doc" Denton said.
Sympathy cards will be available, he said.
Shaffer, a security officer with the Bergen County Bureau of Police Services, was still alive when members of the East Bergen Rappel Team found him. He was pronounced dead soon after.
Authorities had issued a Be On the Lookout (BOLO) alert hours earlier after discovering his possible intentions, law enforcement officers told Daily Voice.
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