The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking procurement for the repair and modification of inertial navigation systems. The requirement includes a quantity of 8 units of the National Stock Number (NSN) 7R-6605-016240383-E8, with the Technical Data Package (TDP) version 001. These navigational instruments are critical for various defense applications, ensuring accurate positioning and navigation for military operations. Interested vendors should contact Peter A. Kobryn at (215) 697-4313 or via email at PETER.KOBRYN@NAVY.MIL for further details regarding this presolicitation opportunity.