The Tunnel to Towers Foundation will pay off mortgages for the families of 50 deceased first responders and military personnel, including 20 in New York City, the nonprofit said Thursday.

The organization – named after the path firefighter Stephen Siller took as he walked through the Brooklyn Battery Tunnel to the Twin Towers in the moments after the 9/11 attacks – said payments would go to first responders and Gold Star families across 18 states.

Families of police, firefighters, soldiers are among those whose mortgages will be clear.

On Thursday morning, the organization said all 50 mortgages had been paid or were in the process of being paid.

“For T2T, this is the biggest one-day mortgage pledge and it will be a great tribute to these fallen heroes,” the organization said. “Their families and loved ones will never have to make another mortgage payment again and it’s all because of the outpouring of support. “

Four Californian families are also included in the sizable gain.

Families from New Jersey, Colorado, Montana, Texas, Maryland, Wisconsin, Florida, Tennessee, North Carolina, Minnesota, Massachusetts, Arizona, Ohio, Mississippi, Illinois and New Mexico are also included.