By Garrett Reim2021-01-22T00:50:00+00:00 The Director of Operational Test and Evaluation’s (DOT&E’s) stealthy Fifth-Generation Aerial Target (5GAT) was lost to an in-flight mishap in October. A safety investigation is underway to determine the cause of the prototype unmanned air vehicle mishap, the DOT&E says in its 2020 annual report to the US Congress. Source: Sierra Technical 5GAT rendering The drone is disposable and is intended to be used for target practice. It is designed to mimic the low-radar cross section of adversaries’ stealth aircraft. In recent years, Russia has introduced the stealthy Sukhoi Su-57 and China the Chengdu J-20. The US Air Force wants stealthy target drones to practice firing on.