An infrared target recognizer system usually consists of the infrared sensor, the target recognizes: processor and the target recognizer algorithms. Initially the problem was detined that sensors existed to support automatic targeting and the risk was in the algorithms and processor development. The current perspective is that the fielded generation of infrared sensors do not support fully-functional target recognizer requirements. It is also believed that the current algorithm approaches may be successful given "correct" sensor inputs. This paper discusses the second generation of FLIR sensors and the system impacts on automatic target recognizers.