The U.S. Navy heard the likely implosion of the missing Titan sub on Sunday, June 18

 https://www.npr.org/2023/06/23/1183976726/titan-titanic-sub-implosion-navy

Extra days of news media suspense regarding the Titan+Sub, but it all likely ended on June 18.

https://www.cbc.ca/news/world/us-coast-guard-investigating-titan-submersible-titanic-acoustic-anomaly-1.6886797

https://www.npr.org/2023/06/23/1183975136/james-cameron-titanic-titan-sub