Fighting fires at night is an effective tool for combatting threatening wild fires. Temperatures drop, humidity typically increases andit is easier to spot hot spots at night making nighttime firefighting ideal. Now, CO Fire Aviation has a new tool to combat fires at night. Aviation Specialties Unlimited, Inc., (ASU) recently modified an Air Tractor AT-802F for night vision goggle (NVG) operations giving pilots an increased advantage in the safety and effectiveness at night.