At sea: Passengers off California await virus test results

  • CORRECTS FROM COAST GUARD TO NATIONAL GUARD HELICOPTER- In this photo provided by Michele Smith, a National Guard helicopter delivering virus testing kits lowers crew down to the Grand Princess cruise ship Thursday, March 5, 2020, off the California coast. Scrambling to keep the coronavirus at bay, officials ordered a cruise ship with about 3,500 people aboard to hold off the California coast Thursday until passengers and crew could be tested, after a traveler from its previous voyage died and at least one other became infected. Princess Cruises says fewer than 100 of those aboard have been identified for testing. (Michele Smith via AP)

  • Masks, gloves, and other protective supplies are displayed during a visit of Vice President Mike Pence, Thursday, March 5, 2020 to Camp Murray in Washington state. Pence was in Washington to discuss the state's efforts to fight the spread of the COVID-19 coronavirus. (AP Photo/Ted S. Warren)

  • Vice President Mike Pence bumps elbows with Washington Gov. Jay Inslee, left, during a news conference, Thursday, March 5, 2020, at Camp Murray in Washington state. Pence was in Washington to discuss the state's efforts to fight the spread of the COVID-19 coronavirus, and officials have been avoiding shaking hands to prevent the spread of germs. (AP Photo/Ted S. Warren)

  • In this image from video, provided by the California National Guard, a helicopter carrying airmen with the 129th Rescue Wing flies over the Grand Princess cruise ship off the coast of California Thursday, March 5, 2020. Scrambling to keep the coronavirus at bay, officials ordered a cruise ship with 3,500 people aboard to stay back from the California coast Thursday until passengers and crew can be tested, after a traveler from its previous voyage died of the disease and at least two others became infected. Airmen lowered test kits onto the 951-foot (290-meter) Grand Princess by rope as the vessel lay at anchor off Northern California, and authorities said the results would be available on Friday. Princess Cruise Lines said fewer than 100 people aboard had been identified for testing. (California National Guard via AP)

  • CORRECTS COAST GUARD TO NATIONAL GUARD-In this photo provided by Michele Smith, a cruise ship worker cleans a railing on the Grand Princess Thursday, March 5, 2020, off the California coast. Scrambling to keep the coronavirus at bay, officials ordered a cruise ship with about 3,500 people aboard to stay back from the California coast Thursday until passengers and crew can be tested, after a traveler from its previous voyage died of the disease and at least two others became infected. A National Guard helicopter lowered test kits onto the 951-foot (290-meter) Grand Princess by rope as the vessel lay at anchor off Northern California, and authorities said the results would be available on Friday. Princess Cruise Lines said fewer than 100 people aboard had been identified for testing. (Michele Smith via AP)

SAN FRANCISCO — Passengers on a cruise ship off the California coast were instructed to stay in their cabins as they awaited test results Friday that could show whether the coronavirus is circulating among the more than 3,500 people aboard.