A service will be held at Glasgow Cathedral today to mark the first anniversary of the Clutha helicopter crash in which 10 people died.
Hundreds of people are expected to attend the ecumenical service this afternoon.
Scottish First Minister Nicola Sturgeon, Bernard Higgins, Assistant Chief Constable of Police Scotland, Reverend Gordon Armstrong, Chaplain of the Scottish Fire and Rescue Service, Dr Neil Dignon, Consultant in Emergency Medicine at Glasgow Royal Infirmary, and several church leaders are among those expected to speak.
All three people on board the police helicopter - pilot David Traill (51) and police officers Kirsty Nelis (36) and Tony Collins (43) - were killed when it crashed through the roof of the Clutha pub shortly after 10:20pm on November 29th 2013
Six people inside the pub - Robert Jenkins (61), Mark O'Prey (44), Colin Gibson (33), John McGarrigle (57), Gary Arthur (48) and Samuel McGhee (56) - died as debris fell from the roof.
Joe Cusker was pulled from the wreckage alive but later died in hospital. Some 32 people were taken initially to hospitals across the city.
The cathedral service is among a number of events taking place this weekend to mark the tragedy.
Last night, hundreds of people attended a benefit concert at the Barrowlands in Glasgow to launch the Clutha Trust, which aims to help disadvantaged young people.
Scott McCafferty, of Ska band Bombskare which was among the line-up, said: "It's important to remember what happened. It's important to remember those who were lost. It's very hard to try and make sense of something that's as tragic as that."
Today, police officers will face firefighters in a commemorative charity ice hockey match at Braehead Arena.
The final report into the crash is expected to be published by the middle of next year, air accident investigators have said.
The Air Accidents Investigation Branch yesterday said that the helicopter was "not fitted and not required to be fitted with crash-protected flight data or cockpit voice recorders, and its systems did not provide for the continuous recording of operational parameters" and that as a result, "significant work was required to extract and analyse the contents of non-volatile memory (NVM) from micro-chipped equipment known to record data."
It said that this, together with further examination of the aircraft and subsequent tests, has now been completed to the extent that the investigation team may reach its conclusions.
This video shows the helicopter being lifted off the roof of the pub back in December 2013:
