Norfolk Southern train M3R (an extra train 13R) ran yesterday with seven locomotives on the head-end: D9-44CW #9170, ES-44AC #8166, D9-44CW #9133, ET44AC #3644, D9-44CW #9740, SD70 #2532 and D8-40CW #8331. Here is a photo and video from Markham, Virginia.
Photo
NS D9-44CW #9170 leads train M3R east near Markham, Va on 3/5/2017
Video