Jet Flying Crazy Patterns Over Southern RI & MA

Planefags, anyone see this? (He's since landed).

Tail # N139DZ

https://flightaware.com/live/flight/N139DZ?fbclid=IwAR1lAGbi1ElAjTMdPz–6sErHsmCsw3ZLUya5JOQNyeERMU6cOuqgC-iqcg

https://flightaware.com/resources/registration/N139DZ