Royal Marine JJ Chalmers on his career before Afghanistan, working through months of pain and discomfort, and what he enjoyed about Afghanistan.
JJ's Mum Liz on deal with the difficult prospect of JJ going to Afghanistan and coping while he was there, and the power of prayer after the explosion.
David, JJ's brother, tells of a moving experience at Dunfermline Abbey a week after the blast.
JJ's dad, the Revd John Chalmers, who wrote the emails reaching around the globe). How he found the experience of his family's struggle.