So, 6 in Diego Garcia and 6 in Guam.
They are probably being refreshed after the long flights and the crews are getting some sleep and situation briefings.
I imagine that the Iranians will not know what path they are taking and there are probably lots of spoofing drones to confuse anyone who is trying to find them.
And, the MOPs could have been sent to these bases in April on ships.
Shell game.