Prompt
"Generate an image of a Union Pacific Railroad locomotive, specifically the Union Pacific Big Boy, traveling through a scenic Western United States landscape with a mountain range in the background, under a bright blue sky with a few puffy white clouds. The locomotive should be depicted in a realistic style, with the iconic Union Pacific shield logo prominently displayed on the front of the engine. In the foreground, include a few railroad tracks and a small section of a railroad yard, with a few buildings and some railroad equipment in the distance. The overall style should be a mix of realism and a slight nostalgic feel, capturing the essence of the American West and the history of the Union Pacific Railroad."