A former top official in U.S. nuclear weapons research at Lawrence Livermore and Los Alamos national laboratories has died after an automobile crash in New Mexico
A transportation security officer in D.C. speaks out about the DHS shutdown's impact, calling the situation "unfair" as TSA agents struggle to support families without pay....
As Iranian drone waves test traditional missile defenses, the Pentagon is accelerating layered counter-UAS systems, from drone interceptors to high-energy lasers....