In the City of the Ghosts ( Happy birthday !!)

This time the entire Police departament heard an earthquake.
Everybody took their gear and prepare for emergency calls.
Nobody called the police for the one minute, one hour, the entire day.
Detective Drill was called for his boss and assigned the case.
What the hell happened ? Asked Drill's chief, go now and give me an answer.
Drill did not stop thinking about, took his phone and called every
public organization to inquire about the explosion they heard in the
morning. The last unbelievable call was in the Major of the City.
His secretary answered happily saying that the President exploited an atomic bomb
just to celebrate his happy birthday. At last Drill listened a nice
voice asking for anything else.