After a DWI arrest, many people assume a breath test settles the case, yet state law, police procedures, and individual circumstances often deserve closer examination. A breath test can feel final, especially after an arrest, yet one reading never explains every medical, mechanical, and legal factor. Defense review starts earlier, with the officer’s first observation, then follows each step through testing and documentation. Defense review should connect symptoms, records, and officer observations before they treat any single sign as proof. Strong defense review tests the stop, field exercises, officer training, machine history, lab handling, timing, health factors, and recordings.