On the way to Dyce!

12.33 flight to Dyce. I get lots of flights directly over my house on their way to or from Aberdeen Airport Dyce.  Today the Contrails (condensation trails) were particularly evident with a perfect blue sky  -  no post-editing required. Of course, they may sometimes be Chemtrails (Chemical trails) that Govenments around the world are said to be spraying the skies with in an attempt  to control climate changes. How to tell the difference?  There's plenty on YouTube  -  some believers and some disbelievers, and some even suggesting aliens may be responsible!