UP is doing a little change to their livery.
The American Flag has been moved from the engine access doors to the point of the units. The change was primarily driven (according to the article I read) by employees who did not like the way the flag got discolored from the proximity to the engine room. This also allowed Union Pacific to display their logo across the larger mid-body area. Last, the "wings" on the nose are being redone or done away with - I'm not sure which.
Another interesting part of this picture - is that an old tunnel motor at the extreme left or ?
Paul