GPS technology is used in everything from car satellite systems to iPhones to FitBits. How does GPS actually work? Who takes care of the vast constellation of satellites that are needed to make these systems work? Enhanced with full-color photographs and fact boxes, this book showcases current military technology and tools, historical accounts leading to today''s global systems, and tips to prepare for a career in the military.

GPS technology is used in everything from car satellite systems to iPhones to FitBits. How does GPS actually work? Who takes care of the vast constellation of satellites that are needed to make these systems work? Enhanced with full-color photographs and fact boxes, this book showcases current military technology and tools, historical accounts leading to today''s global systems, and tips to prepare for a career in the military.

GPS technology is used in everything from car satellite systems to iPhones to FitBits. How does GPS actually work? Who takes care of the vast constellation of satellites that are needed to make these systems work? Enhanced with full-color photographs and fact boxes, this book showcases current military technology and tools, historical accounts leading to today''s global systems, and tips to prepare for a career in the military.