The operator of the state’s power grid is urging Californians to conserve energy on Thursday as the first major heat wave of the year continues. A Flex Alert calls for Californians to conserve power between 5 and 10 p.m. Reporter: Lily Jamali, The California Report  The month of May proved to be the busiest in the Port of Los Angeles' 114-year history, as crews processed more than a million containers. It also became the first Western Hemisphere port to process 10 million container units in a one-year period. Guest: Gene Seroka, Executive Director, Port of Los Angeles In Mendota, a small farmworker community in Fresno County, about half of the city’s 11,000 residents were born in Mexico and Central America. Now, the city is preparing for more Central American migrant youth to arrive in the coming months because of changes in U.S. migrant detention policies.  Reporter: Madi Bolanos, Valley Public Radio This week, California ended the mask mandate in most public settings. On Thursday, the state’s Occupational Health and Safety Board is set to vote on rules about masks in the workplace.  Reporter: Alex Hall, The California Report When California dropped most COVID-19 restrictions this week, it meant that for the first time in over a year, performers could get back on stage in front of a full house. But it's not that easy to just turn on the switch. Reporter: Jerimiah Oetting, KAZU Movie theaters have been hit hard by the pandemic, but they're slowly starting to see more customers with the state reopening. The Roxie Theater in San Francisco is not going to full capacity just yet. Guest: Lex Sloan, Executive Director, Roxie Theater Learn more about your ad choices. Visit megaphone.fm/adchoices