Quantitative progress in key areas of nondestructive testing (NDT) is approaching a point where there is a fundamental, qualitative advancement in the information provided. Most of the improvements are evident in the key areas of modeling and signal interpretation. An example of a technique that is drawing attention is ground penetrating radar (GPR). Today, this technique is being exploited to provide reliable quantitative and dimensional information. This and other developments show that the next decade will be a very interesting one in the arena of NDT.