What should be done with the navigation light switch during a wing fire?

In the event of a wing fire, it is crucial to turn off the navigation light switch. This is important because leaving the navigation lights on could potentially exacerbate the fire situation. The lights generate heat, and if a fire is already present, any additional heat source can lead to further ignition or intensification of the flames. Additionally, having the lights off helps to reduce any potential confusion for other aircraft that might be in the vicinity, as illuminated navigation lights could mislead them regarding your position and intentions. Therefore, turning off the navigation light switch is a necessary step to ensure safety during and after a fire emergency.