Were you referring to:
- Energy Shields, a technology utilised by both Covenant and UNSC supersoldiers which provides limited protection?
- Shield Generator (Covenant), the Covenant structure which provides limited protection in Halo Wars?
- Stationary Shield Generator, the device used by the Covenant during offensive ground operations?
- MJOLNIR Shield Tester, a machine which generates the MJOLNIR's shield system?
- Bubble Shield, a UNSC personal defence device?
- Deployable Cover, a Halo 3 deployable piece of Equipment similar to the Stationary Shield Generator?
- Shield Door, a Forerunner energy shield which only repels gunfire?
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