military threat
3.Occultist Helena Blavatsky (The Secret Doctrine, 1888) introduced the idea of the Atlanteans as cultural heroes (an aspect that is absent in Plato, who describes them mainly as a military threat to the Greeks), and described its inhabitants as the fourth "Root Race", succeeded by the "Aryan race".
10.Especially in military applications, communication intelligence system, as one of the Electronic Support Measures (ESM) in Electronic Warfare (EW), is used to monitor electromagnetic spectra activities, implement threat detection and warning, and help to select jamming strategy and to intercept useful military intelligence.

