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LOS ANGELES (KTLA) — The L.A. Unified School District is unveiling an ambitious plan to increase security at 400 elementary school campuses.

The district says it will hire 1,000 security aides. Each campus will get at least two of those aides.

They’ll be unarmed, but they will have vests and two-way radios for better communication.

The plan is estimated to cost about $4.2 million. The aides could begin appearing on campuses as early as March 1.