звукова розвідка
acoustic beam
acoustic bullets
acoustic countermeasures
acoustic field
acoustic homing torpedo
acoustic impact
acoustic mine
acoustic mine-hunting
acoustic sensor
acoustic target-sensor
acoustic warfare
acoustic warfare countercountermeasures
acoustic weapons
acoustic detecting apparatus
acoustic profile
underwater acoustic surveillance
acoustic beacon
acoustic lining
acoustic airport environment
acoustic alteration
acoustic insulation
acoustic material
acoustic measurement station
acoustic noise
acoustic overhead
acoustic saturation
acoustic treatment
Secret Intelligence Service (SIS) / Military Intelligence, Section 6 (MI6)
tactical intelligence / combat intelligence
undeclared member of the intelligence or counter-intelligence agencies
accurate intelligence
actionable intelligence