CSX M587-31 (Louisville,KY-Greenwood,SC) is picking up speed as it heads south on the Western & Atlantic Sub on the outskirts of Ringgold, GA. CSXT NÂș 99 is the head motor that is assigned to lead the unit vehicle train, which is a nice sight to catch the very first orders of the AC4400's purchased by CSX, and hard to believe that these 20+ year old pieces of equipment are being sent off to be rebuilt into the CM44AC series locomotives.