L3 KEO employs a full spectrum of engineering and manufacturing disciplines to design and build sensor systems for submarines ... , surface ships, combat vehicles, and other defense platforms. L3 KEO is the US Navy’s choice for submarine imaging and surface electro-optical gun directors. At KEO we are entering our second century of business and have been part of many firsts dating back to our founding in 1916 when we designed the first submarine periscope for the United States Navy. Today KEO has delivered and supports imaging systems on every operational US Navy submarine and many friendly navies throughout the world. Located in a state of the art manufacturing facility in Northampton, MA we pride ourselves as being a culture of continuous improvement. Branded by our history and driven by innovation – KEO continues to set the standard for world-class submarine imaging and electro-optical Gun Weapon Systems integration. read more