that's for the most severe injured folks. the yellow tarp is for the intermediate and the green is for the least severe. oh if you see someone on a yellow tarp right there, that's described as an intermediate emergency, is that right, mike? >> that's correct. if you see someone in red, those 0 would be the most critically injured people. but l.a. fire do drills like this all the time in preparation for they call it mca, a mass casualty incident. that's a triage area now. it looks like they're working on one patient there in that yellow area. >> as we watch what's going on, casey wian is heading there, tom fuentes is watching what's going on. we've got all our teams in los angeles gearing up. we hope this is resolved quickly but it's been going on for more than 45 minutes right now. shots fired inside terminal 3 at l.a.x. there are multiple injuries we