Matranga’s plan includes having at least one deputy per school campus in the district. Each of those deputies will have an AR-15. Matranga said, “These are the weapons we purchased for our deputies. I’m a firm believer that we fight firepower with superior firepower.”
One deputy armed with an AR, doesn't sound like much of a plan to me.
One deputy can't be everywhere all the time. Plenty of time and opportunity to enter and kill, before he/she makes it to the killing scene.