susan, it's difficult to get a straight story. what do we know about these texts? >> we know they seem to be missing. perhaps not recoverable. it's a very mysterious coincidence that this happened with these texts that played -- could have played a key role in the investigation into january 6th. we know that there's -- secret service says there was a migration to a new phone system and that's the reason these texts weren't backed up, that the individuals had responsibility for doing that. really, it's one of those things if you were writing a movie, it would be hard to believe this explanation. >> phil, your co-author has done obviously great reporting on the secret service for many years. here is what she told us about what she thinks was behind this. >> we don't know whether or not this was just a stupid screwup or something a little more intentional.