Seems like they could use a glow-in-the-dark paint to simulate the radium that had to be removed. Flying with zero visibility and no instruments, people will naturally enter a turn, thinking they are going straight.,(reply>), @Titanium Rain that's cool! Though, I've personally not seen those advertised in my area. I'd love to get my hands on something that cool, though, eventually.,(reply>), @MrJJandJim Use of tritium is still advertised on watch dials and night sights for firearms.,(reply>), @Kalli Katzke if you tell anybody about anything being radioactive, they'll flip out and try to sue you or something.,(reply>), I would think about how tritium would work in this, its still radioactive but is what replaced radium because it can do the same job safer