JOINT BASE LEWIS-MCCHORD, Wash. -- Exercise Rainier War 2020 was conducted at Joint Base Lewis-McChord, Wash. from Aug 3 - 7, 2020. The purpose of Rainier War is to exercise and evaluate the ability to plan, generate, and execute an airlift tasking, to sustain contingency operations, and demonstrate limited elements of full spectrum readiness (FSR) while in a contested and degraded operations (CDO) environment.