COMMACK - There's more security around Commack schools today after word that a man in an SUV approached three young girls.Commack school officials say a man in a blue Nissan Pathfinder pulled up to three young girls in front of a house on Bluegrass Lane and said, "I have something for you."Then, as they went to get a parent, officials say he said, "You'll never know."The district is advising parents to talk to their children about safety and handling confrontation.