"Largest bio-terrorism drill in California's history recently took place in San Bernardino (Nov. 18.)".
Although this claim is true, I think it important to point out why this doesn't really mean anything.
A quick check of the source confirms that indeed, the largest mock bioterrorism drill in California's history did occur recently.
However, by the time of the San Bernardino shooting the drill had been over for about two weeks.
The time span between these two events leads me to believe that they are unrelated and that the drill is not evidence of a false flag.
Fixed bad redirect on 2nd source