My condolences to Tina and the Piotrowski Family. I first met Chris close to 30 years ago, and was immediately struck by his scientific brilliance, modesty and sense of humour. I then had the pleasure of working closely with him for 10 years during his Aunir/AB Vista career. What a pleasure he was as a colleague – funny and relaxed, innovative and effective, a true leader. Chris had the unusual ability to deal equally with everyone from leading scientists to the lay-person, making all feel comfortable and appreciated. Chris changed his chosen field of work, and made life better for those he met on his journey through life – what a remarkable man, what a pleasure and honour to have had him as a friend and colleague. Rest in Peace my Friend.