For ground-based observers calling in fires on a target, the observer historically worked with a radio and a pair of binoculars, or a bulky laser guidance system to get the job done. But systems have become more more precise and portable over the decades.
The service's $24.5 billion fiscal 2022 budget request is weighted heavily in its research and development portfolio as it seeks to develop more resilient, capable architectures, particularly for space-based missile warning and tracking.