From the April 23, 2015 Daily Digest:   The FCC has approved the nationwide deployable trunking channels as recommended by NPSTC and NRPC.

PUBLIC SAFETY AND HOMELAND SECURITY BUREAU APPROVES RECOMMENDED NATIONWIDE CHANNELS FOR DEPLOYABLE TRUNKED SYSTEMS IN THE 700 MHZ NARROWBAND PUBLIC SAFETY BAND. (DA No.  15-483). (Dkt No 02-378 RM-11433 13-87 RM-11577 96-86 )  Approves the Depolyable Trunked Channels.  PSHSB . Contact:  John A. Evanoff  at (202) 418-0848, email: John.Evanoff@fcc.gov https://apps.fcc.gov/edocs_public/attachmatch/DA-15-483A1.docx

https://apps.fcc.gov/edocs_public/attachmatch/DA-15-483A1.pdf