This is a for fun image seen at the Birmingham, Alabama National Weather Service. I had the opportunity to visit the office last week. While reviewing the SPoRT products with a forecaster, we came across this MODIS spectral difference image at 1 km resolution. Typically, this product is used for fog detection. However, on the night of November 9th, the high contrails of aircraft were evident. While not useful in a forecast sense, this highlights the great resolution of MODIS and what we will eventually see with the Advanced Baseline Imager on GOES-R. It does not hurt that this is an interesting image as well.