Table 6.5 summarizes relative national capabilities in the optical sensor technologies discussed in the preceding sections. The table lists the major sensor categories, the broadest range of capability, and the highest sensitivity demonstrated in the laboratory today. For some of the sensor types, also listed is the sensitivity that may be expected in a practical device. The columns beside both the range and sensitivity list the nationality of the organization having demonstrated the result. The state-of-the-art research result for the majority of sensor types has been recorded by U.S. organizations. Much of this work has been done at the Naval Research Laboratory and the National Institute of Standards and Technology Laboratory. Overall, these results indicate that the United States leads in research and development of optical sensors.