DHS's Office for Interoperability and Compatibility (OIC) and the Office of Emergency Communications (OEC) provide support to NPSTC's Broadband Working Group (BBWG) and its task groups to research and define public safety broadband requirements in a number of key areas.  On December 11, 2012, NPSTC presented the Public Safety Broadband High-Level Launch Requirements, Statement of Requirements for FirstNet Consideration (SoR), to the FirstNet Public Safety Advisory Committee (PSAC), who in turn presented it to the FirstNet Board to assist them as they develop the NPSBN.