The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for a sole source contract to supply control units for Auxiliary Power Units (APUs). This procurement is critical as the control units are essential components in aircraft engine systems, ensuring operational efficiency and reliability. The government requires that all proposals include necessary data for source approval, as they currently lack sufficient information to engage with alternative suppliers. Interested vendors must contact Kate Schalck at 215-697-1020 or via email at kate.n.schalck.civ@us.navy.mil for further details and to obtain the NAVSUP WSS Source Approval Brochure, which is crucial for proposal consideration.