Two executives with Rideau Transit Group/Rideau Transit Maintenance will testify Thursday at the final day of the public inquiry into Ottawa’s problem-plagued LRT network. (Francis Ferland/CBC)After more than three weeks of testimony and more than three dozen witnesses, the public inquiry into Ottawa’s light rail misadventure is set to wrap up today.Over the past 17 days, the inquiry’s lawyers have put tough questions to several high-profile witnesses — including Ottawa Mayor Jim Watson, former transportation general manager John Manconi and “super consultant” Brian Guest — about their actions in the weeks and months leading up to the launch of the $2.