Progress Energy using Nextel

From Weaverville on 04/03/14, listened to tech testing airbreak switching, and transformer work, using step by step authorization of the DCC. It was on 820.3875. I realize this is the input of 865.3875. But, 865.3875 is licensed nationwide to Nextel and it's subsidiaries. From listening often to Progress / Duke, I recognize them Does anyone have recent information that Progress has switched to using Nextel for it's activities? Thank you all, happy listening