Forgive my cynicism here, but isn't this story too good to be true? He just happened . . . . etc etc.
And there just happened to be a photographer there to take an ideally posed photo of him in action.
Everyone, including Kenyans have smartphones these days that can provide decent quality film and photos, especially in small format news publishing. You can be sure that unpixellated versions of the footage are on the net somewhere, so ironically this chap will get a bit too much recognition for this caper...I met a couple of Ozzie SAS chaps some years back, who were discretely straightforward, but became uncomfortable by my youthfully naive enthusiasm in questioning them in greater depth.