Fourth Echelon Night Vision Goggles

The Fourth Echelon Night Vision Goggles is a crutial gadget for all 4E field agents, as it allows them to see in the dark and, if upgraded, allows them to see sonar and/or sonar, thermal, sound, and footstep tracking pulses.

It's an updated successor to the Third Echelon Sonar Goggles, in which its only use was sonar and wall seeing pulse and lacked the night and thermal capabilities. It's also the second successor to the Third Echelon Multi-Vision Goggles, which included Night, Thermal, EMF(Electro-Magnetic Field), and EEV(Electronically Enhanced Vision) Visions.

It's notible users are Sam Fisher and Isaac Briggs.