There are currently 32 military facilities in California. The Base Closure Commission (BRAC) already shut down the non-essential ones. In San Diego County alone there are 6 major Navy and Marine facilities, There are 112,000 active duty servcemembers in San Diego County and 120,000 military family members.
Some economic figures for the military presence in San Diego:
$24.8 billion in direct military spending — $7,700 for each resident of San Diego County
57 Navy/Coast Guard ships are based in San Diego, and that will grow to 84 by 2023.
Jobs created by defense spending include engineering, food services, retail sales, health care, education, real estate, shipbuilding and construction
Each aircraft carrier based in San Diego generates $700 million for the local economy.
Personally, I was never convinced that the commission was that well insulated from political influence nor that they eliminated all the non-essential bases.