Red is often used to emphasize the significance of fire or other hazards. Examples in the collection include ID #1157, San Francisco Burned District (1906); ID #1399, Mayhem - Major Chemical Accidents/Incidents Reported 1986-92; ID #1393, [Nuclear] Accident (1984); ID #2155, Region of Rat-Bitten Babies (1988); ID #1401, Adirondack Areas Burned By Forest Fires During the Spring of 1903.