I sit on the bench outside Publix. A little boy ran by me in light-up sneakers when I was almost, almost, almost to the door, and suddenly I could hear Caleb’s feet, encased like two meat loaves in the shoes I got him before he started K-3, drumming against the cart. He was so careful not to kick me after that one time–Don’t hurt Mommy!  I’d had to let go of the cart and sit down because everything was narrowing down to a tunnel with Caleb at the other end. I tried to count my breaths, and I told Tom…