The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking contractors for the repair and modification of inertial navigation systems. The procurement involves a total quantity of 26 units of the inertial system, identified by NSN 7R-6605-013988561-YX, with a Technical Data Package (TDP) version 001. These navigational instruments are critical for various defense applications, ensuring accurate positioning and navigation capabilities. Interested parties should contact Peter A. Kobryn at (215) 697-4313 or via email at PETER.KOBRYN@NAVY.MIL for further details regarding this presolicitation opportunity.