When using an emergency hammer (Nothammer) to break a designated single-pane toughened safety glass (ESG) emergency exit window, where should you strike the glass?

1. In the exact dead center of the pane where the glass is thickest
2. Near a corner or edge of the window pane with a sharp, forceful blow using the pointed tungsten-carbide tip
3. Gently scrape the rubber seal without touching the glass
4. Throw the hammer through the windshield