9786, along with the other adjacent BNSF units in the photo, had come into Atlanta on M585 the day prior. In order to send them back to BNSF on an I180-series, they were towed on M527-30 from Atlanta to Fairburn. In addition to BNSF9786, this lashup also included KCS4171 and CP8654. I happened to be awake early and was heading to work when I spotted them dropping off the BNSF power. What a lucky catch!