The DoD Anti-tamper Executive Agent assists Weapon System Programs in achieving CPI Resilience. CPI Resiliency provides several benefits: 1) Prolongs Combat Effectiveness & the Warfighter's Advantage, 2) Maintains Overall Battlefield Preeminence, 3) Mitigates the Need for Costly Replacement Programs, and 4) Enables Investment on New Capabilities. CPI Resilience is the Warfighter’s last line of defense when a fielded weapon system is OUTSIDE of U.S. control.