. >> nbc's dan scheneman has the latest. >> reporter: as the number of confirmed covid-19 cases goesp in california, the state is locking down. >> regions where the i.c.u. capacity is falling below 15%, we are now mandating that we are implementing a stay-at-home order for three weeks. >> reporter: 33 million californians are under the order. they have been told to stop gathering. there will be no more in-person dining and retail will be reduced. >> we're coming up on a year of enduring covid and for them to take this away, it feels a little, it feels a little extra. >> reporter: the lockdown dealing a blow to small business owners and their employees. >> everyone is on the brink of just like complete, like financial devastation at this point, like we just can't afford this shutdown. >> reporter: not everyone willing to cooperate. the sheriffs in orange and river side counties refusing to enforce the order. >> river side county sheriff's departments will not be blackmailed, bullied or used as muscle against river side county residents in the enforcement of the governor's orders. >> r

asking people to stay inside as much as possible dan scheneman has more >> reporter: as the number ofonfirmed covid 19 cases goes up in california, the state is locking down. >> region with the icu capacity is falling below 15%, we are now mandating that we are implementing a stay-at-home order for three weeks. >> reporter: 33 million californians are under the order. they've been told to stop gathering, no more in-person dining, and retail will be reduced. >> we're almost coming up on a year of enduring covid and for them to just take this away, it feels a little extra >> reporter: the lockdown dealing a blow to small business owners and their employees. >> everyone is on the brink of just, like, complete, like, financial devastation at this point. like, we can't afford the shut down >> reporter: not everyone willing to cooperate side counts department will not be blackmailed, bullied, or used as muscle against river side county res kepts in the enforcement of the governor's orders. >> reporter: just hours before the lock down began, families enjoyed one last trip to the playground.

nbc's dan scheneman has more. >> reporter: on christmas day, a blast shook downtown nashville. today authorities named the bomber. >> we have come to the conclusion that an individual named anthony warner is the bomber. he was present when the bomb went off, and that he perished in the bombing. >> reporter: investigators used dna evidence to zero in on warner. the motive is still under investigation. police believe he acted alone. >> there is no indication presently that anyone else was involved in this crime. >> reporter: the bomb left a massive crater, more than 40 buildings and businesses damaged. >> i saw the biggest flames i've ever seen. >> reporter: nashville police officers credited with saving lives by clearing the area talked about it for the first time today. >> once we made contact with everyone we could and made sure that they were getting out of the building is when we started to move down. >> reporter: the blast left three people injured. no one was killed. >> that was god, yeah. i'm not going to shy away from that. i am a spiritual person, and so i truly believe

. >> reporter: dan scheneman, nbc news >> bringing the conversation back here to what's happening in europe, the german state of bavaria will impose tougher coronavirus restrictions including partial closures and school closures after it declared a disaster area in the region it will be until wednesday, january 25ing, with some relaxation around christmas, but not before christmas eve 400 deaths reported so far the u.k. is set to begin one of the biggest immunization drives in history with the first covid vaccination set to take place across the country tomorrow. it was one of the first hospitals in the u.k. to receive doses stored at temperatures of minus 70 to minus 80 degrees celsius. jomana, this is a huge week on the vaccine front for a number of reasons beginning tomorrow a massive vaccination program. in addition to that we're eyeing the u.s. where the fda is set to hold a advisory committee meeting to discuss the pfizer/bientech vaccine. we are due to get a release before that meeting. they will get more detailand the overall data that pins the vaccine that has led to u.k. to