A six-year-old boy has raised nearly £11,000 for a Royal Air Force welfare charity.
Jacob's passion for military aircraft has been the driving force in his ambition to raise money for the RAF Benevolent Fund, which supports personnel, veterans and their families.
Jacob says he wants to be a pilot when he is older, and is a big fan of the Red Arrows, adding that "they're my favourite team".
He climbed one of Yorkshire's Three Peaks, Pen-y-ghent, in August.
His next challenge is to retrace the footsteps of a pilot shot down in the Second World War.
He and his father Andy will attempt to walk the 25 kilometres of the escape and evasion route of Pilot Officer Al Deere, who was shot down in Belgium 80 years ago.
"It does get quite emotional at times really to think what he's actually achieved at such a young age," his dad said.
Ahead of his time with military aircraft knowledge, Jacob spends many afternoons soaring through his living room in Leeds, desperate to take to the skies one day.
"His mum's quite proud of him in the aspect of what he's doing with regards to raising the money, but more so, I think me probably with kind of the whole interest in the military," he added.
"My grandad, and my dad and myself all served, and potentially Jacob - should he choose to as he gets older - will follow in that family tradition, if you like."
Jacob's efforts have gained much military attention, including from the Red Arrows.