It is hoped the anniversary of the Omagh bombing will reinforce a message of peace for the North.
17 years ago today, 29 people lost their lives in the blast, making it the single biggest atrocity of the Troubles.
A memorial service will be held tomorrow in memory of those who died and the 220 others who were injured.
Speaking with Citybeat radio, Michael Gallagher, whose son Aidan died in the attack, said today is a chance for Omagh to show its strength.
"We would really feel that it's a great opportunity for people to come together and show their support for those who have suffered … it would really send a strong message out from Omagh that we're a community that are together - and will stay together," he said.