Richard Payne told an inquest into the death there were "deficiencies and failures" with their equipment.Not least with his leadership.
Were this another time and place, he would be expected to retire to his study with a brandy & a revolver...
Speaking at their son's inquest, Olivia and David Chapple said they had examined a risk assessment document with their son before he left for the expedition in July 2011.My heart, small shrivelled thing that it is, breaks for them. Because what they were looking at wasn't a risk assessment at all. It was just a well-meaning piece of paper.
They had a plan. But, it seems, they had no plan for when the plan failed.
Richard Payne, chief leader of the expedition, told the inquest: "My intention was that all young explorers and leaders would have a pen flare.
"It was only when we landed at base camp... that I discovered there wasn't enough pen flares to equip everybody on the expedition."
Mr Payne said he had changed the original trip wire from fishing line to a heavy duty braided fluorescent cord as the previous system was "going off too easily".
"There was a shortage of stakes on to which the trip wire mechanism is attached," he said.
"There was a shortage of the small brass sear, which is a trigger for the device.
"There may have been some shortage of the trip wire itself."
Mr Payne said he met with base camp leaders to come up with a solution and decided to use a safety pin in the device to act as the trigger. The camp sites were also changed to be triangular in formation to make up for a lack of mines, with Horatio's group having three mines instead of four situated around their site.Jesus wept!
Assistant Coroner for Wiltshire and Swindon Ian Singleton asked: "Were you satisfied with the safety aspect of the trip as a whole?"
Mr Payne replied: "The three mines was the only downside, otherwise I was happy."Are you happy now?