Answer:
I save lives on the ground and in the air. What am I?
I am alive without breath and cold as death. I am never thirsty but always drinking.
The more you take away the bigger I get. What am I?
My first two letters say my name. My last letter asks a question. What I embrace I destroy.
What runs around the whole yard without moving?
What did the piece of wood say when he saw the screwdriver and screws approaching?