we buy our satellites from the major manufacturers, boeing, loral, orbital, primarily here in the u.s. they are of course, trying to build their satellites to operate in any environment and the good news is that most satellites little well beyond their 15-year design life. so they're doing a great job. so the question is at what point would an event happen, we would say, okay, it is dangerous to do something with the satellite now, we're not going to load code today or we're not going to try to communicate with the satellite today? or we would maybe put the solar panels in a different orientation? these are issues that just aren't very clear right now. so we would look to a collaborative effort with the manufacturers and the government to provide advice on this now a similar thing happened in space debris. so, a couple of decade ago, nasa got very interested in understanding the debris environment. that led to the situation where we have today where we actually get warnings from the defense department, called conjunction summary messages. we actually get warnings in advance, if dod th