On Wednesday, off duty Coral Springs police Sgt. Jeff Heinrich was on campus just as a dad. Heinrich, wearing shorts and t-shirt, was watering the infield as part of his duties as volunteer baseball trainer at Marjory Stoneman Douglas High in Parkland, Florida, when the school fire alarm sounded and he heard popping sounds near the school parking lot.
I thought it was fireworks and kids messing around at first, Heinrich tells PEOPLE. But then the veteran police sergeant whose wife is a teacher at the school and son is a student and varsity baseball player there saw students streaming out of the building and recognized the distinct sound of rapid gunfire.
(People)