Answer:
I save lives on the ground and in the air
I beam I shine I sparkle white. I’ll brighten the day with a single light. I’ll charm and enchant all I’ll bring the best in you all.
David's father has three sons: Snap Crackle and ?
My second is performed by my first. A thief by the marks of my whole might be caught. What am I?
You have to travel far before you turn it over. What is it?
No matter how little or how much you use me, you change me every month.