markey was here last night, reporting on his investigation on cell phone data, and joining me now is sam biddle right for gizmodo. sam, there's so many strange things about this, including that we don't know how long cell phone companies keep this data. the aclu reports that the problem is cell phone companies refuse to reveal how long they keep it, mostly. sprint says they keep it for 18 to 24 months. at&t says they've been holding on it for indefinitely. >> and we have to take them at their word when they say it's only been so long. and like you said, there's no end date. so they're holding on to this stuff really until they're forced to delete it. >> and it's kind of, they're getting it within what used to be their wiretap powers. but they're getting it without warrants, most of the police departments they ask for it, they just hand it over. >> right. if a police agency comes and says there's some sort of danger or threat, which is such a nebulous criterion to begin with, they hand it right over. >> so for that to be a legitimate inquiry, you're trusting the police officer who's actually doi