Current federal law prohibits individuals from carrying their personal firearms on a military installation. The only defense on an installation is the military police, which take 5-15 minutes to respond to an incident (Ford Hood shooting & at the Washington Navy Yard on 9/16/2013). This delay results in higher fatalities of patriotic men & women that serve our country in civil service, military, & contractor positions.
Military personnel with clearances are thoroughly vetted for mental health issues & conceal carry permit holders know how to safely employ their weapons. This would greatly increase the probability of survival and in a similar incident by neutralizing criminals that disregard the law and take weapons on installations with the intent to kill.