Behavior Detection Officers: In 2003, the TSA implemented the Screening of Passengers by Observation Technique (SPOT), which expanded across the United States in 2007.
行为检测官：2003年，TSA实施了观察技术筛检乘客（英语：Screening of Passengers by Observation Technique）（SPOT），并于2007年扩展到美国各地。