Ghetto bird in the North Side

Well actually, I’m not sure if it’s a ghetto bird or a commercial helicopter. It’s hard for me to see any insignias from that distance. But it comes towards the North Side near the 91 freeway on a daily basis when I’m coming home from work at around 5-6pm and it’ll continue to periodically circle here throughout the evening. It flies kind of low so it’s hard to miss. Is it flight training or are they actually patrolling the area? If anyone knows, please share.

Edit: I live near the Ramona Park neighborhood