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In episode four, Bradley and Barney leave Kentucky behind and travel 150 miles north to the mid-west city of Dayton, Ohio – the birthplace of aviation.
In episode three, Bradley and Barney head further north into the state of Kentucky where Bradley is put to the test with a spot of abseiling, ghost-hunting and boxing.
In episode five, Bradley is on the mend following his rodeo injury and determined to get back behind the wheel of the RV. The pair head to Niagara Falls, one of the most iconic natural wonders in the world, nestled between Canada and the US.
They might be father and son but when it comes to travelling they remain worlds apart and as Bradley approaches his 60th birthday he is keen to relax, while Barney wants to live life a little more on the edge.