Ballistic Trajectory Extended Range Munition

The Ballistic Trajectory Extended Range Munition (BTERM) was a failed program to develop a precision guided rocket-assisted 127 mm (5-inch) artillery shell for the U.S. Navy. The program was originally named the Autonomous Naval Support Round (ANSR) and was developed by Alliant Techsystems.

Source: Wikipedia — Ballistic Trajectory Extended Range Munition (CC BY-SA 4.0)