Alone on the plane

My son is used to travel alone by plane.
He has done it since he was very little. Visiting relatives and grandparents from the south of the country.

I felt my heart was ripped apart each time I saw his small body wander alone into the airplane.
To him, it was just fine.

Yesterday we said goodbye to eachother on an airport again. Like many times before.
He was going to visit his uncle and aunt.
I managed it without getting too soft.
I think I have become quiet tough, lately.