Search and rescue efforts

This July 12, 2019, photo released by International Bird Rescue shows baby snowy egrets being cared for in Fairfield, Calif. The animal rescue group is asking for help caring for baby snowy egrets and black-crowned night herons left homeless last week after a tree fell in downtown Oakland. (International Bird Rescue via AP)

Rescuers carry out a survivor from the site of a building that collapsed in Mumbai, India, Tuesday, July 16, 2019. A four-story residential building collapsed Tuesday in a crowded neighborhood in Mumbai, India's financial and entertainment capital, and several people were feared trapped in the rubble, an official said. (AP Photo/Rajanish Kakade)

This undated photo released by the Inyo County, Calif., Sheriff's Office shows Sheryl Powell, who is missing. Inyo County Sheriff's Office spokeswoman Carma Roper says 60-year-old Sheryl Powell, of Huntington Beach, Calif., remains missing Monday, July 15, 2019. Her husband reported Friday that they selected a site in the Grandview Campground and she took their dog for a walk while he repositioned their Jeep. Roper says investigators have determined the husband is not connected to her disappearance. (Inyo County Sheriff's Office via AP)

Rescuers work at the site of a building that collapsed in Mumbai, India, Tuesday, July 16, 2019. A four-story residential building collapsed Tuesday in a crowded neighborhood in Mumbai, India's financial and entertainment capital, and several people were feared trapped in the rubble, an official said. (AP Photo/Rajanish Kakade)

Louisiana Lt. Gov. Billy Nungesser, left center, helps move a wooden barricade to block a road where water was rising in Plaquemines Parish just south of New Orleans as Hurricane Barry makes landfall along the coast on Saturday, July 13, 2019. (Chris Granger/The Advocate via AP)

In this undated provided by Kim Searson, Brittney Searson poses at Louisiana State University in Baton Rouge, La. Searson was among those killed when a helicopter carrying billionaire coal entrepreneur Chris Cline crashed in the Bahamas on Thursday, July 4, 2019. (Kim Searson via AP)

The Italian NGO Mediterranea Saving Humans' Alex migrant rescue ship carrying 46 migrants rescued off Libya coasts, docks in the port of Lampedusa, Sicily island, Italy, Saturday, July 6, 2019. Italy’s hard-line interior minister, Matteo Salvini, has barred all private rescue ships from entering Italian ports. He pointed to an offer from Malta to accept the migrants from the Italian-flagged ship. (Elio Desiderio/ANSA via AP)

In this photo provided by Russian Emergency Situations Ministry press service, flooded houses are seen after been affected by a flooding in Irkutsk region, Russia, Friday, June 29, 2019. According to the latest data of the regional emergency command center, the flood has affected 48 settlements of five municipal districts of the region. A source in the emergency services told TASS on Saturday that as a result of the flood in the region five people died and several were reported missing. (AP Photo/Ministry of Emergency Situations press service via AP)

Rescuers and others gather at the spot after heavy rainfall caused a wall to collapse onto shanties, in Mumbai, India, Tuesday, July 2, 2019. More than a dozen people were killed even as forecasters warned of more rains. (AP Photo/Rafiq Maqbool)