The Department of Defense, through the Army Contracting Command New Jersey (ACC-NJ), is conducting a market survey to identify potential sources for engineering support services related to the integration of an Assured Positioning, Navigation, and Timing (APNT) capability with the M119A3 towed howitzer's Honeywell artillery Tactical Advanced Land Inertial Navigator (aTALIN). The objective is to retrofit existing aTALIN units and procure new ones that support the integration of the Government-defined APNT capability, which is crucial for enhancing the operational effectiveness of the M119A3 howitzer's Digital Fire Control System (DFCS). Interested vendors are invited to submit their capabilities, including their ability to handle GPS User Equipment and cryptographic keys, along with a Rough Order Magnitude Cost for the required services, by June 16, 2025. For further inquiries, vendors may contact Jayde A. Liuzza or Daniel Rakauskas via the provided email addresses.