The COLT Test Technician / Depot Sustainment Operator – Maintenance II is the primary custodian of the Common Organizational Level Tester (COLT) and is responsible for the repair, calibration, and sustainment of COLT hardware, associated test kits, and TPS (Test Power Supply) cables used in depot‑level support. The incumbent troubleshoots, repairs, and certifies equipment, enforces ESD controls, updates records in SAP‑PM, ensures compliance with DFARS, MIL‑STD‑810/461, and ISO‑9001, and provides technical guidance to junior technicians and depot operators.