Thank you very much.
I'd like to go back to the issue of submarines. The four submarines that Canada acquired were used and cost $2.5 billion. That was $750 million for the purchase, $1 billion for refitting and $1 billion for relaunching. We have invested a lot, at least more than what we originally thought, and these are used submarines.
I would like to know their lifespan. When do you think they will have to be replaced?