My understanding is that the $368B doesn’t run out until after the eighth SSN AUKUS has been delivered,
The two Block 4 Virginia’s are planned to have 20 years service life so your timeline can be extended whereby the first Virginia is retired when the 6th SSN AUKUS is delivered and the second Virginia is retired when the 7th SSN AUKUS is delivered.
The third Virginia will still have some significant life left when the 8th SSN AUKUS is delivered so I don’t understand why they are planning to acquire a new build Virginia instead of a second hand one with the required life still available.
nup, runs out after the 5th ssn aukus in the mid 2050s.