Lens Colour ??
I was watching some of the coverage of the war in Iraq. It was of USN Hornet pilots doing their stuff. In cockpit shots showed the pilots with yellow tinted visors. From personel experience (while skiing) I know the difference a yellow or pink tinted lensed goggles can make in low/difficult light conditions in comparision with either neutral grey sunglasses or none at all.
I fly single engine helicopters VFR only. Even with a Radar Information Service the best form of collision avoidance system is still looking out of the bubble with the standard issue Eyeball, Mark 1, Vision, for the use of.
If such a simple thing as a pair of yellow tinted glasses can make such a difference in spotting anything else in the same area of sky, why has this little bit of info not been passed along by those in the know? My thinking is it must be effective if the USN are buying lens for all of their pilots. Does anyone know anything about this?