Answer:
I save lives on the ground and in the air. What am I?
The person who makes me doesn't need me. The person who buys me doesn't use me. The person who uses me doesn't know it. What am I?
What runs around a soccer field, but doesnβt move?
I help boats park
You throw me away, I find my way back. Traditionally, I'm wooden with an arch in my back. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.