A memorial service will take place on Thursday to mark the 30th anniversary of the Droppin' Well bombing in Ballykelly, Co Londonderry.
Seventeen soldiers and civilians died when the pub was attacked on 6 December 1982.
Many more people were injured in the atrocity, which was claimed by the INLA.
Relatives of the victims are to attend a service at 3pm at Tamlaght Finlagan Church of Ireland.