CSX N040-18 Southbound at Red River Cut, Adams, TN July 20, 2020 – CSX loaded coal train N040-18 makes its way south through the Red River cut at Adams, Tennessee with CSXT 956 leading the way. Tech Info: Full Frame Nikon D800, RAW, Sigma 150-600 @ 195mm, f/5.3, 1/320, ISO 220.