A Canadian show made by CTV about a police tactical response team in a nondescript (but clearly Toronto) city. It is co-produced by and also airs on the American network CBS, one of several shows developed as a means of getting around the most recent writers' strike (Canada is outside WGA jurisdiction). The series started in 2008 and is still ongoing. A show with a remarkable amount of emotional appeal, character development, and complex webs in each episode.