Well, they were over 8 miles away when the bomb detonated, so they wouldn't have seen any of the destruction. Even reconnaissance planes were initially unable to survey the extent of the destruction due to the enormous amounts of smoke caused by the fires, and dust brought up by the bomb.
Also the service ceiling for the B-29 is 31,850ft. 40,000ft would've been impossible.
Tensions were very high during that time period. so many alliacnces were made as well as rivalries. it was a "powder keg" and when he was killed the keg exploded
How many students are there? That's missing from your query.
Is there a chart you can show us?
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