We will see. I am going tomorrow or Wed night. It isn't in a great neighborhood so I hope some of that security extends to making sure everyone gets safely to their cars on the lots. I would not consider parking outside the fairgrounds lots.
Metal detectors are a good start. They had them in Sacramento at all gates plus they did a quick check of purses, backpacks, and strollers. It created quite a backup at opening time but it was worth it for peace of mind.