Focal length of lens -EF 300mm
Shutter Speed -shot at 1/320
The effect of this shutter speed is that its not to fast but its not so slow its just right for the action.

Aperture-shot at f/13.0

The effect (Depth of field) of shooting at f/2.8L (IS USM), aperture was the range of distance around the focal plane. It does not change from sharp to unsharp, but instead occurs as a gradual transition. Sometimes, everything immediately in front of or in back of the focusing distance begins to lose sharpness.

Position - I think the photographer was standing near the shore to get a closer look & a better photo. However, the photographer mentions that he was "standing on a sand bar type island in the lake as the men jumped from a hovering helicopter."