March 28, 2017 12:50 pm PG&E Taps into Drone Business PG&E on Tuesday tested to see if drones could be used to detect gas leaks in hard to reach areas. US & World Videos 1:22 Thousands flock to San Francisco's Mission District to celebrate Carnaval 0:41 Police investigate after motorcyclist shoots at car along I-280 in San Mateo County 2:32 Cinthia's forecast: Sunshine, warming ahead 1:01 Steph Curry's BottleRock Napa Valley appearance with Bradley Cooper draws large crowd 2:21 Alcatraz ferry workers strike amid start of summer tourism season in San Francisco