The head of this teardrop-shaped glass can withstand bullets https://www.washingtonpost.com/news/morning-mix/wp/2017/05/17/the-head-of-this-teardrop-shaped-glass-can-withstand-bullets/ https://twitter.com/drsekula/status/866286492771135489/photo/1 https://chirp.cooleysekula.net/attachment/32056