Discussing his weighted vest, Mr Heron said: “It’s going to be pretty heavy but obviously in the military you do a lot of weighted runs, so I’m kind of used to the weighted run itself but not to this extreme.
“I want to show everyone that it is okay to carry that hidden weight that so many men carry without telling anyone.
“You just need to talk, you need to communicate.”
Mr Heron also said during his challenge he would be “having a lot of demons” telling him to stop.
“I’m definitely going to have a lot of mental health battles but again, I think the reason I’m doing it is going to push me through it.”