An Evacuation Drill

Today in 4th period,we had an evacuation drill.
It's been several years since I had one in school days.
From classroom to the school ground,it took us about 5 minutes!!
It was so big that it holds many sports field;soccer,football,rugby etc.

I'd thought after the evacuation drill,teachers would tell something,but there was nothing.We had nothing but waited for 30 minutes.
Sunshine was so strong that it was warm enough:)A little tired...