Hiding a baseball

I'm playing in a H.S. baseball game, an umpire makes a controversial call on a home run by the opposing team. Suddenly, I'm in the outfield as the call is being judged; I agree that the ball remained in play, making it a home run for the opposing team. I secretly find and pick up ball in tall grass. It's red and has a dent in it. There is a line of trees and house in outfield, I seems that this home run is some sort of record - seemingly the 400th home run to hit the house or go into the trees - and the ball is valuable.

Everybody is looking for ball, I'm trying to find my friends and avoid a guy I think suspects knows I have the ball.

There's some sort of catastrophe or military attack that causes the school to go into lock-down - nobody can enter or leave the grounds, but it seems to be enforced arbitrarily but with deadly force. I have all my belongings at the school and somehow roll everything up into a rug and can carry the bundle on my bike. There's a wall people are climbing over, I hoist my bike and the bundle over the wall. On the other side, I overhear that "They're only concerned about vehicles with red letters on their plates." My car is in the lot - I look at the plates to see they are red. My bike has black lettered plates.