Ferebee took aim at his objective the bomb dropped.
What is the sense of the above sentence?
It doesn’t make sense. Have you left out some punctuation?
Perhaps it will be like as follows-
Ferebee took aim at his objective. The bomb dropped.
I am not sure. In the passage it was like the following–
Ferebee took aim at his objective The bomb dropped.
Then I assume that Ferebee was piloting a fighter plane. He took aim at the place he had been told was the target and released the bomb, which dropped from the aircraft.