City Hall was a busy place Wednesday when Sarnia officially marked the 100th anniversary of its incorporation as a city, on May 7, 1914.Here, children from the Aamjiwnaang First Nation Junior Kindergarten and Day Care sing O Canada and happy birthday in Anishinaabwmowin. Looking on are Sarnia Mayor Mike Bradley, Lt. Governor of Ontario David C. Onley, and Brian Knott, the master of ceremonies.The celebrations also featured a cake-cutting, the St. Clair marching band and school choir, a town crier, Aamjiwnaang Chief Chris Plain and Lambton County Warden Todd Case.