...and that's why you need the marker

As my train was departing the yard, I was looking for some kind of marker (flag, push pin, etc) to put on the end of the train. I grabbed a push pin off the bulletin board, and was immediately asked about it by one of the club's young members. Explaining that the marker indicated the end of train, rather than using a caboose, the push pin fell off and I could tell it wasn't going to stay on without a lot of help.

Since this is a model railroad, I just decided to go on without it. After finishing my switching, I returned to the yard with the empties I had pulled out and as the train became visible there was a new car on the front.

That was the car I tried to put the marker on. Guess I needed it anyway...