Installation is a common prefix to Forerunner structures, and may refer to the following:


Installation Designation Name Status
Installation 00 The (Lesser) Ark Heavily damaged
Installation 01 Beta Halo Active
Installation 02 Epsilon Halo Active
Installation 03 Gamma Halo Damaged
Installation 04 Alpha Halo Destroyed
Installation 08 Alpha Halo (replacement) Destroyed
Installation 05 Delta Halo Surface partially glassed by the Covenant
Installation 06 Eta/Kappa Halo Active
Installation 07 Zeta Halo Active
Line Installation 1-4 The Line Deactivated
Line Installation 9-12 The Line Active


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