NATO has declared a second-level highest threat level at its airbase Charlie in Geilenkirchen, North Rhine-Westphalia. All non-essential personnel have been sent home as a precaution, reports FAZ. According to a base spokesperson, the elevation to Charlie security level was prompted by intelligence indicating a potential threat. In NATO jargon, a Charlie security level indicates that an incident has occurred or there is evidence suggesting a high likelihood of some form of terrorist action against the Alliance. “This is not a cause for concern but is purely a precautionary measure to ensure we…