Public Safety Commissioner Christian Mathiesen says he will investigate instituting random drug-testing policies in the city’s police and fire departments. During Tuesday night’s City Council meeting Mathiesen said he personally does not believe random drug testing is necessary in either department, but if the community at large would feel safer with random drug testing of both departments, “it’s certainly something we can look into.” The commissioner said he is not in favor of a random drug-testing policy in Public Safety because he thinks it is “an overreaction” to the recent arrest of a city firefighter for allegedly possessing crack cocaine. “It is an isolated incident,” he said.