Survivors and relatives of the victims are due to mark the 20th anniversary of the Enniskillen bombing today.
Eleven people were killed when the IRA detonated a massive bomb without warning in the Co Tyrone town during a Remembrance Day parade.
The victims included elderly couples - Wesley and Bertha Armstrong, Billy and Agnes Mullan and Kit and Jessie Johnston.
The others were Sammy Gault, Ted Armstrong, Johnny Megaw, Alberta Quinton and Marie Wilson, who died in the rubble beside her badly injured father, Gordon.
A 12th person, Ronnie Hill, also slipped into a coma days after the explosion and died almost 14 years later.
Nobody has ever been charged or convicted in connection with the outrage, which is now regarded as a milestone in forcing republicans to reassess their tactics and sue for peace.