43.
There are whole teams of individuals whose responsibility is to ensure there are several back-up measures in place in case of a serious incident. That’s why there is always two pints of blood in the type of the #1 passenger inside of the vehicle at all times. Additionally, at least one oxygen tank is stored on board at all times as well. When you are transporting the leader of the free world, it’s always a good decision to include some due diligence for backup scenarios.