Dr Joshua Corso was the Senior Resident on duty the night of the Pulse Nightclub shooting in Orlando, and had a photo of his trainers covered in blood go viral.<p>I saw him do a talk at an EMS conference a few years back that was both profoundly touching and deeply insightful, and talked about all the things you might not think of (at one point, there was a lot of banging from something nearby the ED, that made people think there was more shooting, and so they had locked it down further, which made some of the efforts more difficult (moving people from ED to theater, for example).