The answer is rescheduling
Thetis tells Achilles that he has the choice to either return home and live a long life without glory, or die a glorious death fighting at Troy. ... Achilles decides to fight, knowing that he is sealing his fate when he returns to battle. Ultimately, the relationship between fate and free will in the Iliad remains unclear.
I wouldn't use the word "discovered" it just seems a bit off. I'd rewrite the sentence with a simpler word yet easy to say and understand: "When we searched the school for damage, a new broken window was found." I hope this helps you. My apologies if this is incorrect.
Answer: save the plane
Explanation: you would save trillions of lives instead of 5