The Department of Defense, specifically the Department of the Navy, is seeking contractors for the repair and modification of detection units, as outlined in a special notice from NAVSUP Weapon Systems Support Mechanicsburg. The procurement focuses on services related to hazard-detecting instruments and apparatus, which are critical for ensuring safety and operational effectiveness in various defense applications. The work will take place in Mechanicsburg, Pennsylvania, and interested parties can reach out to Joshua Eshleman at (717) 605-6055 or via email at joshua.j.eshleman@navy.mil for further details. This opportunity falls under the NAICS code 334511 and PSC code 6665, indicating its relevance to the manufacturing of search, detection, navigation, guidance, and aeronautical systems.