Mister Feis

Aaron Feis threw himself in front of students and was shot protecting them from a gunman during a mass shooting at Marjory Stoneman Douglas High School in Parkland, Florida. Another staff member, Scott Beigel, was also killed while ushering his students into his classroom out of harm's way.
Image found on Reddit.

Also, from here.

Hi everyone, my name is Sid, I'm a Junior at Stoneman Douglas and I'd like to share my story of what went on in room 1214, the third room that was shot into by the shooter, and where Nick Dworet (second to top right) and Helena Ramsey (second to bottom right) were killed. 2:20 PM – We are working on the laptops doing an online activity when we hear about 10-15 gunshots outside of our door. Everyone scatters and from about 25 kids, two groups were split in different corners. I was in the corner that is immediately to the right of the entrance, Nick was in the back right corner that could be immediately seen from the entrance. The group with Nick and Helena were trying to form a barricade with a cabinet and a computer cart (one that holds laptops and charges them) but without even 20 seconds to react, the shooter comes to our door and starts shooting through the window of the door. He was shooting at the corner that Nick and Helena were in as well as about 12 other students with them in that corner. Nick got caught in the fire and died immediately, Helena also got caught and was shot twice in her chest. I was in the opposite corner so I couldn't see his body because a cabinet was in the way, and I'm thankful that I didn't witness his body because it probably would have affected me much more. A girl told me she had to use Nick's body as a shield once she saw he was dead immediately 🙁 Here is an edited version of the map to show the corner where I was hiding (blue), where Nick and Helena were (orange) and where the shooter was shooting from (red). Thank you for the support you have been giving. And if any of you came out to the vigil yesterday, I have no words for how happy I am that you came to support.