Recently, the U.S. Air Force’s WC-135 “Constant Phoenix” nuclear-sniffing aircraft has been spotted flying over multiple states, drawing public attention. The WC-135 is a specialized reconnaissance aircraft designed to detect radioactive particles and gases in the atmosphere. Its primary mission is to collect airborne samples following nuclear detonations or radiological incidents to determine whether a nuclear test or accident has occurred. Equipped with highly sensitive sensors and air-sampling systems, it can analyze atmospheric radiation in real time during flight.These recent flights covered several Midwestern states, including Nebraska, Colorado, and Kansas. According to the U.S. Strategic Command, the missions are part of routine nuclear monitoring training exercises—not in response to any specific threat. The goal is to maintain the nation’s readiness to rapidly respond to potential nuclear events and ensure equipment and personnel remain fully operational.While some residents expressed concern over low-altitude flights, the military emphasized that these operations strictly adhere to safety protocols and involve no weapons. The WC-135 has played a critical role in global nuclear monitoring since the Cold War, notably collecting data after North Korea’s nuclear tests and the Fukushima nuclear disaster. This domestic deployment reflects standard preparedness drills rather than an emergency response.
近期，美国空军的WC-135“核嗅探”飞机在多个州上空频繁飞行，引发公众关注。WC-135是一种专门用于探测大气中放射性微粒和气体的特种侦察机，主要任务是收集核爆炸或核泄漏后释放的放射性物质样本，以判断是否发生核试验或核事故。该机型配备高灵敏度传感器和空气采样系统，可在飞行中实时分析空气中是否存在异常辐射。此次飞行覆盖了包括内布拉斯加州、科罗拉多州、堪萨斯州等中西部地区，并非针对特定威胁，而是美军例行的核监测训练任务的一部分。美国战略司令部表示，此类飞行旨在维持国家对潜在核事件的快速响应能力，并确保相关设备与人员处于战备状态。尽管部分民众对低空飞行感到担忧，但军方强调，这些行动完全符合安全规范，且不涉及任何武器搭载。WC-135自冷战时期起就承担全球核监测任务，曾在朝鲜核试验、福岛核事故后执行采样任务，是国际核不扩散体系中的重要技术手段之一。此次国内飞行更多体现的是美军对核应急机制的常态化演练，而非应对紧急事件。
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