to find the pingers and it took them two years. just like with air france in the south atlantic. this is probably going to be a very long search and unless we just luck out and one of these hears the pinger and we localize it quickly. >> chairman mccaul, as head of homeland security committee, are security officials still pursuing the possibility that this is a terrorist plot? are they still pursuing the possibility that the plane didn't crash, that it landed somewhere on a remote runway in the southern indian ocean or have they basically given up on that scenario? >> well, i think in terms of landing it on a runway somewhere, probably less likely. i think it's in the indian ocean. we haven't ruled out the terrorism although there's no direct evidence of that at this point in time. if this was a deliberate attack as we think it was, remember the transponders turn off after they