Report from the Western Front, Sir. It's about the Planes... Sitting outside after work with a pair of binos and a laptop tuned to Flight Tracker. Scanning the sky from about 1740 to 1835 hours. Sure enough the first 2 commercial carriers flying north at cruising altitude are spewing a white plume out the ass end.  But wait!!! The next 8+ carriers are as clean as the evening blue sky behind them, and note that all planes are using the same established flight lanes.  Using Flight Tracker for each flight viewed with the binos gave this information: all the airlines belonged to the following carriers: Alaska, Delta, Southwest and 1 Jet Blue. Which two were dirty? Southwest. Let's take a random look at Southwest Airlines... from Wiki because I'm lazy. Let's see.... Well this is an interesting factoid, Thomas M Nealon was named President of Southwest Airlines AND Michael G. Van de Ven was named Chief Operating Officer on the same day, which in my limited business experience I would say was a major "shake-up" of STRATEGIC EXECUTIVE LEADERSHIP on.... wait for it... 10 days  before President Trump took the oath of office before millions of Americans. 10 days. Forgive me, but I find this to be very coincidental. Not only that, but under the Key People Section of the Wiki article, only the Chairman/CEO, Gary Kelly has his name hot-linked. The two other Corp executives, Nealon and Van de Ven do not. Minor, I know.... EXCEPT that in corporate,billions of $$ in revenue businesses, the Chair (especially) and the CEO are usually very public figurehead positions. Don't have to be, but often are, thus the hot-link Here is another factoid: in the labor pool of about 59K Southwest Airline employees, the pilot's have their own union, NOT affiliated with the Air Line Pilots Association. The other employees - 83% of their workforce are members of the usual Machinists, Aerospace Workers, etc. With total assets equal to US $26.2 billion, these folks have to invest their money somewhere, right? And the best place is right back into the company, of course! So they built a 100K square foot Network Operations Center that can stand a EF3 tornado, and in 2016, an 800,000 sq. foot complex called the Leadership Education and Aircrew Development Center, capable of developing pilots on up to 26 flight simulators. I don't know much about airlines but Southwest seems to have an extraordinarily self-contained operation. Again, the only two planes during an approximate 1 hour period with the familiar detestable pollution was Southwest Airlines. Cute motto too: "Low Fares. Nothing to hide. That's Transfarency." But maybe management just didn't get the memo from our President... Thank you Alaska, thank you, Delta, thank you Jet Blue!!!!  THANK YOU,  President Trump! Now we just have to work on the rain delivery before things get really bad, might want to investigate Geo-warfare originating in international airspace; but that is a post for another day. WWG1WGA. Trusting the Plan, we are in perilous times.  That's all, Mr. Trump, Sir. God bless and guide you, all ways.