SEN10R Prank Fail

Supposedly, the prank would be finished today but people got caught up last night. Everyone brought everything that would be needed for the prank. But to make up for it, I think someone pulled the fire alarm like 5 times during 3rd block. Then I think it happened again during 5th block, but we didn't hear the alarm go off in the classroom. I guess it's too late to try again.