UPDATE: Why Is There a Helicopter Hovering Above SOMA / Downtown?

Assuming no one mixed speed into our Earl Grey tea, there has been a helicopter hovering the downtown / SOMA / Lower Rincon Hill area all morning. It's low and it's slow. Anyone know why? Update: According to SFist Deborah N, the helicopters are for a filming of Monk. Curse you, USA network! Er, we meant Trauma.