Helicopter Over Mission Canyon?

Don't know about that, but the time is listed here and the banking they used while circling put what ever they were looking for in upper Mission Cyn. and lower Botanic Garden, nowhere near any part of Sycamore Cyn. I was already outside and pretty much watched it the whole time and there was no multi source emergency response before or during, so likely just police activity for suspicious activity or warrants violation.