I think every one was a little surprised that it should be he and not one of the official detectives who took the initiative. 
Everyone was surprised that Poirot seemed to in charge of the presentation about the investigation instead of the official detectives.
I felt Poirot was the logical choice to take the lead.
The engine is all metric.
The people are playing soccer in the gym.
It did not rain and they walked only on the sidewalk.
The officers must have invalid and documented assurances
A man at the fear.
people are dressed up