MIL-STD-2500C, DEPARTMENT OF DEFENSE INTERFACE STANDARD: NATIONAL IMAGERY TRANSMISSION FORMAT (VERSION 2.1) FOR THE NATIONAL IMAGERY TRANSMISSION FORMAT STANDARD (NIFTS) (01 MAY 2006)., This standard establishes the requirements for the file format component of the NITFS.The file format described in this document is called the NITF. The NITFS is a collection of related standardsand specifications developed to provide a foundation for interoperability in the dissemination of imagery andimagery associated data among different computer systems.