A system to search in a low visibility environment comprising: an infrared (IR) sensor and a radar unit to receive measurements in a first field of view; a microphone to receive audio measurements in a second field of view; processing circuitry to determine presence of an animal and/or human in the first field of view using a first machine learning engine trained based upon the IR image measurements and/or using a second machine learning engine trained based upon the radar image measurements; determine presence of an animal and/or human in the second field of view using a third machine learning engine trained based upon the audio measurements; providing a first digital transmission indicating whether a human and/or animal is detected within the first field of view; and providing a second digital signal indicating whether a human and/or animal is detected within the second field of view.