How does Bruce Brooks use imagery in What Hearts?

Imagery:

"Why was she wearing a coat? It was cool under the dense leaves of the high trees, but a coat was not right, not in Maryland in June. A coat was not right. As if to protest, Asa shivered."

"Asa stood up straight into the warm wind and gathered his strength, as if to jump, as if to fly, as if, as if, as if."