ESCO Technologies Inc. produces and supplies engineered products and systems for industrial and commercial markets worldwide. The Company operates through three segments: Aerospace & Defense, Utility Solutions Group (USG), and RF Shielding and Test (Test). The Aerospace & Defense segment consist of operations, including, PTI Technologies Inc. (PTI), VACCO Industries (VACCO), Crissair, Inc. (Crissair), Westland Technologies Inc. (Westland), Mayday Manufacturing Co. and its affiliate Hi-Tech Metals, Inc. (Mayday) and Globe Composite Solutions, LLC (Globe). The USG segment consist of operations, including of Doble Engineering Company and Morgan Schaffer Ltd. (together Doble), and NRG Systems, Inc. (NRG). The Test segment includes operations, such as of ETS-Lindgren Inc. (ETS-Lindgren). ETS-Lindgren is an industry, which provides its customers with the ability to identify, measure and contain magnetic, electromagnetic and acoustic energy.