This guy was working in Japan as an engineer for one of the big U.S. engineering companies... Halliburton or some similar outfit. After December 7, 1941, he and his comrades were rounded up and put into work camps. Since they were civilians they were treated reasonably well. They were not abused and they had adequate food and access to reasonable medical care. They were forced to work for the Japanese, but it was not the arduous work forced on prisoners in other theaters during the war. They certainly did not suffer the anguish of those in the Nazi work camps... which basically worked the prisoners to death.
The narrator indicated that while they had no freedom during this time, in his words "It could have been a helluva lot worse. They treated us with civility."
He was living and working about thirty-miles from Hiroshima when the balloon went up on August 6, 1945 and somewhat farther away from Nagasaki on August 9. He did not see the flash of the Hiroshima weapon, and did not realize until later that "something" unusual had happened. As one might expect, initial reports of the bombing were scattered and full of contradictory information. Some time later word came out of an enormous explosion caused by a single bomb. The nature of the bomb was as yet unknown and confusion reigned supreme.
Then came Nagasaki and the Japanese were forced to realize they were dealing with a weapon of then-unimaginable lethality. The narrator and his buddies were released very shortly thereafter, and a bit later the first American troops, doctors, scientists, engineers, and other such folks started showing up. Radiation testing revealed no contamination where the prisoners had been located. Many of the former prisoners stayed in Japan for some time afterwards and used their engineering skills to help with the rebuilding of the country. Hiroshima, Nagasaki, and the cities that had been firebombed needed all the help they could get.
The teller of this tale said the whole experience had been almost surreal. After the attack on Pearl Harbor they had feared the worst, but the enemy they had so feared instead treated them decently and with respect. After conclusion of the war, they worked with that thoroughly cowed and defeated enemy to rebuild the country and helped turn it into the economic powerhouse and ally it is today.