Missing Titanic Sub Crew's Survival Depends on Rescue Teams As Stepson's Concert Photos Spark Controversy

British billionaire Hamish Harding and four others are trapped in a submersible that lost contact during an expedition to view the Titanic wreckage.
Harding's stepson Brian Szasz attended a Blink-182 concert and posted about it on social media leading to criticism from Cardi B and others.
Szasz claims the concert helped him cope but deleted his Twitter account after facing backlash for his insensitive posts.
The missing submersible only has enough oxygen to last until Thursday prompting an urgent search and rescue mission.
Underwater noises detected by aircraft have raised hopes the crew is still alive and attempting to signal for help.