In our day to day work with satellite imagery, we often see wildfires e.g. bushfires in Africa and forest fires in Asia, and now also in Denmark.
This image acquired by Sentinel-2 captured the fire on Randbøl Hede near Billund on the 7th of May 2018. The first image is a true color showing the smoke from the fire, and the second image shows the location of the flames using the SWIR information from Sentinel-2.