The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for a sole source contract related to the procurement of probe assemblies. This requirement is critical as the government lacks sufficient, accurate, or legible data to contract with sources other than the current supplier, necessitating Government Source Approval prior to award. The probe assemblies are vital components used in aircraft hydraulic, vacuum, and de-icing systems, underscoring their importance in maintaining operational readiness. Interested vendors must submit the necessary documentation as outlined in the NAVSUP WSS Source Approval Brochure, and for inquiries, they can contact Samantha Freedman at 215-697-6566 or via email at samantha.m.freedman.civ@us.navy.mil.