Clark County officials on Monday unveiled a fundraising campaign to build a permanent memorial honoring the victims of the 1 October shooting, seven years after the Las Vegas Strip became the site of the largest mass shooting in American history.

Officials hope they will raise the tens of millions of dollars necessary within the next three years, with the goal of opening the memorial 10 years after the shooting occurred. The nonprofit leading the fundraising — Vegas Strong Fund, which formed in the wake of the shooting to support victims — will seek state and federal grants and donations from the public.