Likely to be a late model Coastie C-130 forgot the "C" prefix.
C2017
https://www.dcms.uscg.mil/Our-Organization/Assistant-Commandant-for-Acquisitions-CG-9/Newsroom/Latest-Acquisition-News/Article/3491121/coast-guard-accepts-17th-c-130j-long-range-surveillance-aircraft/