<Sheldon Mode>
The water we're looking at is the Detroit River, not a lake. To be enjoying the view shown in the picture, the "ATF Agent" MUST be standing in Canada.
The giveaway is the big suspension bridge more or less on the left in the far distance, coupled with the large dark buildings in the middle distance near the center of the shot - The bridge is the Ambassador Bridge across the Detroit River into Windsor, which is on the left side of the pic. The large dark buildings near the center of the image are the Renaissance Center, a rather distinctive Detroit landmark. To be in the shot at all, the "ATF agent" has to be standing somewhere near, if not in, downtown Windsor's "Great Western" park, looking a bit south of southwest. Last time I was paying attention, Windsor, in the Canadian province of Ontario, wasn't part of the USA. The Mounties ain't gonna be happy...
</Sheldon Mode>