>> give me one second. we have a mic problem we'll be working on. mary, let me get your take on this. as we're talking about narrowing the field. they seem more optimistic than i have ever heard through this entire month-plus of searching for flight 370. is there any room for doubt still or do you think they have found it? they say we're in the right place we think. >> i agree with that. i think they have and i think their optimism is justified. if i wanted to play devil's advocate, the biggest concern is the frequency is not exactly 37.5 which is the pinger frequency. it is 33, 33.5. however, the investigators have explained that by saying that it is -- the signal is degraded by the ocean refractions, the problems with the currents and the fact that the battery may be dieing. they're not bothered by the 33.5. i guess that's the biggest