The Department of Defense, specifically the Department of the Army, is seeking white papers for the C5ISR / EW Modular Open Suite of Standards (CMOSS) Mounted Form Factor (CMFF) Project Manager Tactical Radios (PM TR) initiative at Aberdeen Proving Ground, Maryland. The procurement aims to develop a suite of modular open systems that will enhance the Army's Command, Control, Communications, Computers, Cyber, Intelligence, Surveillance & Reconnaissance (C5ISR) and Electronic Warfare (EW) capabilities, focusing on reducing Size, Weight, Power, and Cooling (SWaP-C) through the integration of advanced communication components. Interested vendors are invited to respond to four specific Problem Areas related to the development of a multi-waveform digital Software Defined Radio (SDR) card, a Cryptographic Subsystem (CSS) card, Digital Radioheads (DRH), and a VICTORY Audio Adapter (VAX), with responses due by April 4, 2025. For further inquiries, interested parties may contact Kellie N. Lamar-Reevey at kellie.n.lamar-reevey.civ@army.mil.