An unidentified flying object has reportedly been spotted in the skies above a classified US Air Force facility in Nevada known as Area 51. A video circulating on social media shows a triangular-shaped object airborne and leaving what appears to be a contrail behind it.

According to the reports, the footage was captured using a thermal imaging device. So far, there have been no official explanations or confirmed information clarifying the nature of the object.

One theory suggests the object could be a sixth-generation aircraft being developed under the Next Generation Air Dominance (NGAD) program. Unofficial reports have claimed that test flights of this platform may have begun as early as 2020. Another possibility raised is that the sighting involves a classified unmanned aerial vehicle.

The Nevada base has long been associated with testing secret US aerospace projects. Among the most notable examples is the Lockheed F-117 Nighthawk, which underwent trials there while remaining strictly classified for years.

Earlier, the Daily Mail reported that the US Navy’s Naval Air Systems Command (NAVAIR) may be storing an aircraft of unknown origin at the Patuxent River Naval Air Station in Maryland. Sources cited by the outlet claimed that since the 1950s, the US military has been studying technologies allegedly obtained through the examination of objects of extraterrestrial origin.

The same sources also said surveillance around the base has recently been intensified after Chinese drones and other unidentified objects were allegedly spotted nearby. They further claimed that the US government has an emergency plan in place to evacuate the mysterious object should information about its location become public.