I felt relief.
You see the Japanese had weaponized the bubonic plague and were planing to release it on the West Coast of the US. From there it would have spread to Australia, Europe and Asia in a few days.
You want to feel sorrow and shock think of the Plague hitting a Europe and Asia that had been turned to rubble at the start of winter.
There are much worse things then atomic weapons.
I guess my sorrow I felt had more to do with sadness that it had to come to that. We really didn’t have a choice and there is no doubt that had the Japanese had the bomb that they would have used it.