Simon Chase was one of 21 people killed in a gun and bomb attack outside the gates of the heavily-fortified Taverna du Liban restaurant in the capital Kabul.Mr Chase was originally from England but had been living in the Limavady with his partner and their two children for almost 20 years.He was a former soldier having served in the Cheshire Regiment and the Royal Irish Regiment.Mr Chase had worked in the Co Londonderry town as a doorman and a coach at the town's boxing club before travelling to Afghanistan to work in the security industry.A book of condolence was opened by the council and on Sunday, as his body was returned to the North West town, hundreds of people lined the streets to welcome him home.On Tuesday some businesses closed as a mark of respect before the funeral.At the service at Christ Church, the Rev Jason Kernohan said Mr Chase had made a big impact in the community and would be greatly missed by family and friends."On Friday 17 January, Simon risked his life all to fulfil his calling, he gave his life in trying to protect another," he said."Simon's calling in life was a dangerous one, yet one he was totally dedicated to."He was brave and courageous in all that he set out to do and this powerful example of bravery and courage is a testimony to his love of his family."Rev Kernohan said there had been an outpouring of grief in the wake of Simon's death, noting the massive number of people gathered to express their sympathies.Many of the mourners worn blue, representing Mr Chase's love for Everton Football Club.A guard of honour was formed - with ex-colleagues carrying the standards of the two army regiments he served in - before the former serviceman was laid to rest.