Clock/Time question

[Jurassic Referee]

Originally Posted by BadNewsRef

But in the OP the horn has sounded. At least that is how I read the scenario.

Yup, that's how you read the scenario. But does it definitively state that the horn actually did sound?

All I can tell you that I have seen this question on several previous FED exams and it has always been there as a reference to the case play that I cited. That ain't to say that someone writing the test in the future could make up something similar with vague info and have it refer to the lag time rules instead.