Collins TLAM GPS receiver, made by Rockwell Collins, United States, 1989. Consists of main object and front cover, removed for display.

Since its first major use during the First Gulf War, 1990-91, GPS (Global Positioning System) technology has become vitally important tool for military forces. It is used in anything that requires accurate positioning, from weapons targeting to locating emergency bridges. The Collins TLAM GPS receiver was designed specifically for use inside US Navy Tomahawk Missiles as part of an upgrade programme. It was able to be programmed with target GPS coordinates and had more advanced anti-jamming capabilities. As it used Collins' digital chip technology it was drastically lighter and smaller than previous Tomahawk GPS sets. The GPS division of Rockwell Collins was acquired by BAE Systems in 2020.