4000-4001 are owned by NS... there's also PRLX 4300 which is painted in a dual Progress/NS scheme. 4002-4005 (wide cabs) are completed and in primer, still in testing
4009 and 4010 are going to the ATN for testing before going to NS. 12 are planned to head to the ATN for testing in sets of 2 starting this month.