'Banging noises' heard as search continues for Titanic sub – video
In possible signs of life, Canadian authorities have said they detected banging noises at 30-minute intervals during the search for the missing Titan submersible. The news was first reported in US media citing a US government memo, then confirmed by Canada. It is not clear when the banging was heard or for how long. The rescue operation has been beset by weather difficulties and the sheer size of the area that needs to be searched. Captain Jamie Frederick, of the US Coast Guard, said the area being searched was larger than the size of Connecticut