They call themselves, informally, "Warrior Angel Moms," a group of 10 or so Long Island mothers who've lost children to drug overdose.

The moms, along with drug treatment experts, advocates and other supporters, are headed to Washington, D.C., for the Trail of Truth event, where loved ones will be memorialized Saturday on the National Mall with an art installation featuring handcrafted tombstones representing the loss felt by so many families.

"There'll be 3,000 tombstones from around the country representing people we've lost," said Carole Trottere, of Old Field. According to the Trail of Truth website, more than 3,500 tombstones , painted by artists, activists and community members, will be on display in the "National Memorial Cemetery." There also is a full day of programming plan

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