Jonathan Begay, a 22-year -old man of the Navajo Nation, is playing football with some of his friends in the park. He jumps up in the air to catch the football and is hit by another player. Jonathan flips in midair and feels something pop in his neck as he lands hard on the ground. He does not have any pain, but when he tries to get up, he cannot move his legs or arms. Jonathan is alert and is talking to his friends.