The document is a sealed application and order from the United States District Court for the Southern District of New York, authorizing the use of a pen register and trap-and-trace device on a specific phone line maintained by T-Mobile. The application, made by Assistant U.S. Attorney Alex Rossmiller, is part of a criminal investigation by the FBI into possible violations of 21 U.S.C. § 1591. The order allows the collection of phone numbers, IP addresses, and communication ports associated with communications to or from the target phone, excluding the contents of the communications, for 60 days.