But that’s not all. Apparently soldiers, Marines, and cops can’t rely on the sight in the jungle, or Jersey in July, either. According to the lawsuit, despite EOTech claiming its sights were waterproof after being submerged 66 feet underwater, they weren’t. Because of faulty seals, the sights would accumulate moisture in humid environments, causing the crosshairs to fog on the inside of the unit, making the crosshairs dim. The court records allege EOTech knew about the problem for years, but didn’t tell the U.S. military about it until March 2013 when a video appeared on YouTube showing the crosshairs fading.