rob dudgeon at one point mentioned that's how people know what's happening, communicating via their cell phones about what's happening. but i personally think that has a limited application, right? so when cell phone towers are not working any more and we i think had a blackout in san diego last year, last fall, cell phones weren't working. so social media i think can help and may work and you can get through populations that way, but i think it will be important to know that also has its limitations and at one point that goes. that's when you need to thank back-up communications and that's where the military can also be a force multiplier. >> from the department of emergency management perspective, we have a phenomenal social media team that gets information out over multiple channels using facebook and twitter. we also have an alert sf system that we use that disseminates information just about the helicopter landing during yesterday's exercise, so we have those tools in place and just for your point, i think that would be a really great thing to add even to the communications drill, w