Candidates fail the Expert Infantryman Badge test if they receive two "NO GO"s in one station or three "NO GO"s throughout the course which includes proficiency in night vision involving optoelectronic devices that allow images to be produced in levels of light approaching total darkness.
A second "NO GO" at any station results in a failure for the entire testing phase. In addition, if a candidate receives three "NO GO"s (even if distributed over three stations) they have similarly failed the phase. Proficiency with night vision devices A night-vision device (NVD), also known as night optical/observation device (NOD) and night-vision goggles (NVG), is an optoelectronic device that allows images to be produced in levels of light approaching total darkness. 
