Sometimes its hard for me to hang back and let him go adventuring without me. I want to be the one holding his hand, hearing him chatter, seeing him smile. I want to be at the centre of his joy.
But if you ask John he'll tell you that "Grandma and John see choo choo's" and so when we arrived at the station, just as the last train was preparing to leave, I let Grandma take his hand and walk him along the platform, through the steam, to talk to the driver.
Because I knew that this was really their moment - their memories - and that my place was really behind them, letting them go.