I've read in Wikipedia that cabeese are not used on some freight trains nowadays. I have just got a Southern EMD GP50 made by Bachmann. I don't have a caboose for this engine. Will it be OK if I don't attach a caboose at the end of this GP50 headed train? One more thing, I also have an Athearn SD40-2 (UP colors). Will it be ok if the train it heads doesn't have a caboose? I do have an Athearn wide vision caboose for this one, though. I'd like to use these engines to loosely depict present freight practices.