Our DUI Defense lawyer in Bismarck, ND, Chad McCabe, has extensive trial experience in DUI cases, handling nearly 300 jury trials and over 7,000 DUI cases. The most common mistake that a person accused of DUI can make is to assume that the case cannot be won. Our experienced DUI Defense attorney in Bismarck, ND,. Table of Contents show. The walk-and-turn test is one of the standardized field sobriety tests that we will most likely need to address in the defense of your DUI case. Generally speaking, the walk-and-turn test is one of the easiest tests for us to address. The test may be circumstantial evidence of intoxication, but for most people, the test.