On February 26, 2016, multiple residents of Pentyrch and surrounding villages witnessed a large, triangular craft accompanied by military jets and helicopters flying low over the Welsh countryside. Several witnesses reported seeing strange lights, a pyramid-shaped object and what appeared to be a dramatic military response. Some claimed to observe a “green energy beam” and subsequent ground disturbance in local fields. The UK Ministry of Defence stated there was a routine military exercise, but locals continue to report unusual aerial phenomena in the area, and the case remains the subject of ongoing discussion in Welsh UFO research circles.