Plane spotting

 I recently spent a bit of time at the public runway observation area at the Mpls/St. Paul International Airport.  Delta Airlines was the main attraction that day.  From a distance I saw a couple other names, but the views weren't worthy of a photo.  Shots captured with an old manual focus Pentax 50mm lens and a modern 100mm macro lens, and yellow and red filters to darken color tones and create some contrast.