More than a dozen lawmakers sent a letter to the law enforcement agency, inquiring about policies for the collection and analysis of cellphone data.

The organization wants to know how bulk databases of phone location data are being used by the agencies, which have refused Democratic senators' requests for their legal…

The emergency app allows the agency, with permission, to use cell phone tracking data to find a vessel in distress.

"These geolocation capabilities can expose personal information, locations, routines, and numbers of DoD personnel, and potentially create unintended security consequences and increased risk to the joint force…