Great video and compilation! Think CSX had already replaced all of their remaining Devtronics by 2016/2017, as they couldn't handle trains over 10,000 feet (IIRC). Seems the remaining Harmon Cyberscans survived on a bit longer though, likely due to being newer.
Very nice compilation. Introduced to new defect detectors. The NS one in Gibsonville 15.5 is the H-Line from Greensboro to Goldsboro, consisting a segment of the Danville District.
Great compilation. Sad to hear about the Amtrak Hawk detector. CSX will be putting in a bunch on NG2 on the Pan Am division. A lot of them are at new locations.