Haha Fort Oahu, Fort Maui, Fort Big Island 
No I meant the following:
OahuMarine Corps: Marine Corps Base Hawaii (Kaneohe Bay), Camp H. M. Smith and Pu’uloa Range Training Facility
Army: Fort Shafter, Schofield Barracks, Wheeler Army Airfield (formerly Wheeler Air Force Base) and Tripler Medical Center
Navy: Joint Base Pearl Harbor-Hickam, NCTAMS PAC, Naval Magazine Lualualei
Air Force: Joint Base Pearl Harbor-Hickam, Bellows Air Force Station
Coast Guard: USCG ISC Honolulu, USCG Air Station Barbers Point
KauaiNavy: Pacific Missile Range Facility at Barking Sands
MauiCoast Guard: USCG Station Maui
Big IslandArmy: Pohakuloa Training Area, Bradshaw Army Airfield
Joint Services: Kilauea Military Camp
Not counting anything underground or in any of Hawaii's mountain ranges, is there another installation I missed?