Clock Ticking Bomb

There is a bomb about to go off and your protagonist is the only one who can defuse it.

Every tick of the second hand amplifies the tension and suspense, creating a heart-stopping climax where every decision counts. What challenges does the protagonist face while trying to defuse the bomb? How do they deal with the psychological pressure of the ticking time bomb that could potentially wipe out everything? The emotions coming up here might range from fear, courage, determination, and much more.