JIFFS is an acronym for Joint Interoperability of Fire Control Systems. It is a program developed by the United States Department of Defense to ensure that all fire control systems used by the military are compatible with each other. SECS stands for Standardized Electronic Components and Systems, which are components and systems that have been tested and certified to meet the requirements of the JIFFS program. INSTANTS stands for Interoperable Networked Systems Test and Evaluation System, which is a system used to evaluate the performance of fire control systems in order to ensure they meet the requirements of the JIFFS program.