A memorial service was held on Wednesday to mark the 15th anniversary of the IRA bomb which killed 11 Royal Marines musicians in Deal.
The bomb killed 11 and injured more than 20 others
The attack on the Royal Marines' School of Music in the Kent town happened on 22 September 1989.
A memorial service has been held at the site of the explosion every year since, with a minute's silence held at 0822 BST - the time the 15lb bomb went off.
More than 20 other bandsmen were injured in the explosion.
Damaged by fire
The bomb exploded while the musicians were practising in the concert hall on Canada Road.
Rescuers and other marines from the music school cleared rubble away with their bare hands in the search for survivors in the wreckage of the building.
Kent ambulance workers were on strike at the time, but abandoned their industrial action to transport the casualties to hospitals in Deal and Canterbury.
The Royal Marines' School of Music was moved away from Deal in 1996 and some of the barracks buildings were converted into flats.
The concert hall building, which was a church before it was used by the Marines, was badly damaged by fire in May 2003.
Most of the building has been demolished and a single wall remains, which is being retained as part of the memorial garden of remembrance to those who died in the bombing.
The memorial service is being held in the garden, as it has been in previous years, and begins at 0800 BST, ahead of the minute's silence at the time of the blast.
Representatives from the Royal Marines' headquarters in Portsmouth, where the music school is now based, will attend the service.
The band returned to Deal in July of this year to hold a concert in the town at which the bandstand was re-dedicated to the victims of the bomb.