Massena, NY, Jun 11, 2010 — As the effects of the Gulf oil spill continue to grow, all was calm and sunny on the St. Lawrence River Wednesday. That was the setting for the St. Lawrence Seaway to test its spill response plans. The exercise raised two questions. Should some of the containment boom and manpower positioned along the St. Lawrence be used to help in the Gulf? And if the River were to be the site of a spill today, could America fight oil spills on two fronts? David Sommerstein reports.