I don't know what was around this caboose, but a different angle might have given a better view of the caboose. The black back end of the caboose and the top half of the image where there is little of interest is distracting to what might have been a great photograph.
I love these old cars. I think I'd like to see it more from a vantage point a little further to the photographer's left. The red is very rich and lovely in this.
Again, the lonley caboose. Although this one seems to have been abandoned with a "buddy". Nice colors, but the front of the caboose seems a bit dark. Hard to see any detail there. I think you could have cropped a bit tighter, (less sky) to improve the shot.