If you live or work in Baltimore, you may have been filmed by an aerial surveillance camera some time this year. In January, a private company began flying a Cessna outfitted with high-tech cameras over Baltimore City, on behalf of the police department. The program was paid for by an anonymous donor. Most of us, including members of the City Council and perhaps even the mayor, learned about the program just last week, when Bloomberg Businessweek published an article about it. What is this technology capable of, and why wasn’t the public informed? Has Big Brother come to Baltimore? Our guests: Monte Reel, reporter for Bloomberg Businessweek; David Rocah, staff attorney for the ACLU of Maryland; and Baltimore Police Department spokesman T.J. Smith.