Answer:
*forward* *backwards*is what I do all day. I come in all different shapes and sizes. I can be scary and I can calm you down.
I save lives on the ground and in the air
I have a neck but no head arms but no hands. What am I?
I am a nut with a hole
I am flora not fauna. I am foliage not trees. I am shrubbery not grass.
The answer I give is yes, but what I mean is no. What was the question?