In the hazard area maps produced from DoD’s follow-on modeling of the February 13/14, 1991, strike on the road, the purple sections (light grey when the map is printed) represent the area that received a dosage equal to the general population limit dosage over that entire 24 hour period.

While it is not possible to know precisely where every individual was during every moment of every day, the squares on the map represent the locations of US units on the days in question. These locations may be either positions on the ground or, in a few instances, the locations of personnel engaged in helicopter attacks on enemy targets. If the maps indicate locations north of the Saudi Arabian border with Iraq or in Kuwait before the official start of the ground war, these unit locations generally represent the locations of helicopter assaults on enemy targets during that period. Additionally, cross-border raids had been authorized by the second week of February 1991. If units reported their position during cross-border operations, that information has been captured and is represented on the hazard area maps in this narrative. See Tab F for information on how Gulf War unit locations have been derived.

Two widely accepted versions of the border between Iraq and Saudi Arabia are shown on the maps in this narrative. The familiar border separating Iraq and Saudi Arabia is a pre-1982 boundary. This is the border typically shown on maps used in our case narratives. However, the de facto boundary also shown on these maps represents the border shown on the operational maps used by US ground and air forces during the Gulf War. Some maps used during the Gulf War showed both the pre-1982 border and the de facto boundary, while others showed only the de facto boundary. On many of the maps used during the Gulf War, the de facto boundary was annotated to state that it was displayed as shown on official Iraqi and Saudi maps. This de facto border, then, generally separated Coalition and hostile troops during Operation Desert Shield, prior to the start of Operation Desert Storm, commonly referred to as the ground war. Therefore, US troops were aligned along the de facto boundary, rather than the pre-1982 border, before the start of the ground war.

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