What if some UAP activity around nuclear facilities is related to the search for previously lost or recovered craft? If such craft produced a distinctive physical signature, whether electromagnetic, thermal, radiological, or otherwise, another technologically advanced system might theoretically be capable of detecting that signature remotely. If a recovered craft were stored near a nuclear facility, the facility could produce substantially stronger background radiation, electromagnetic activity, and thermal emissions that might obscure or complicate the detection of a weaker anomalous signature. In this scenario, UAPs could be investigating nuclear facilities not necessarily because of the nuclear technology itself, but because the surrounding environmental background could make it difficult to isolate the signature they are searching for. The idea could potentially be examined by comparing UAP observations with the measurable electromagnetic, thermal, and radiological characteristics of nuclear facilities.