That's true. But for every person that joined the military during the war, one in eight were in actual combat duty. For every one in harm's way, there are seven in a support role that does not ever see live fire. I don't think anyone is arguing that the two individuals in the greatest danger is the Marine flushing out an insurgent hideout... and a drug mule in Detroit operating on the border of another dealer's turf. Who is doing what in both locations makes a difference in both statistics.
But, there are also correlations to business people traveling to Iraq and their safety, as compared to business people traveling to Detroit and their safety. It is also fairly comparable.