Inspection of advanced composite structures often requires the use of ultrasonic water squirter systems. These systems usually utilize through-transmission techniques to detect delaminations and other internal flaws. Through-transmission techniques are useful in detecting the presence of these flaws but cannot provide information as to the through-wall thickness location of the flaw. A pulse-echo squirter system can provide the capability to both detect and locate in the through-wall dimension the presence of delaminations. However, in the past, the turbulence usually generated in water squirter systems has made it impossible to do pulse-echo inspections. This was especially true for finding near-surface defects.