Invigilator

I was assigned as an invigilator in Hall 1, Level 7 for the session from 2:00 pm to 5:00 pm... for some reason, I felt unusually sleepy throughout the afternoon, so I sought permission from the chief invigilator to take a short break... thankfully, I managed to get about 10 minutes of sleep, which was just enough to feel refreshed and alert again... by around 4:30 pm, the sound of thunder began rolling outside, followed shortly by heavy rain pouring down... it was clear that the weather had taken a sudden turn, and it meant we would likely have to push through heavy traffic congestion on the way back later - a tiring but unavoidable end to a long, demanding day...