Breaking News, Latest News and Videos reports: Laos cave rescuers investigating ‘knocking response’ as focus shifts to newly discovered cave shaft CNN Laos cave survivors help with plan to find last two missing men BBC Heavy rain threatens search for 2 gold miners still missing in Laos cave after 5 others rescued CBS News Rescuers search for alternative route to reach 2 missing in a flooded Laos cave AP News Laos cave rescue workers report 'knocking sound' in search for last 2 missing people ABC News - Breaking News, Latest News and Videos