AD Quality Auto 360p 720p 1080p Top articles1/5READ MORERose Parade grand marshal Rita Moreno talks New Year’s Day outfit and ‘West Side Story’ remake “Just your basic stuff,” he said. “Nothing out of the ordinary.” Carol Rock, (661) 257-5252 [email protected] CASTAIC – Residents concerned about a series of ‘sonic booms’ and drifting smoke near Castaic weren’t hearing barrier-breaking sounds Wednesday morning. The outbursts and haze were the combination of a controlled burn and a periodic destruction of old ordnance safely within the confines of the Pitchess Detention Center ranch property, said Sgt. Craig Anderson at the Los Angeles County Sheriff’s Department’s Arson and Explosives Unit. “We were just getting rid of some old military ordnance and evidence we didn’t need anymore,” Anderson explained. “We do it out there on the range and usually nobody hears it, but because of the low cloud cover, the shock and sound waves went right down the canyon.” A tall plume of smoke was generated by a controlled burn conducted elsewhere on the grounds, said Deputy Keith Shaw of the ranch operations unit. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!