One of the most top-secret Pentagon departments — the same that spawned America’s drones, military robots, electromagnetic guns and other sci-fi weaponry — is about to lose its top officer to Google.

Regina Dugan oversaw the development of some of the US military’s most marvelous high tech accomplishments as director of Darpa, but the head of the DoD’s research lab is parting ways with the Pentagon to take on a role with Google.