I did. Well almost la.
Cos that day i didn't have my breakfast, i drank little
water.
So while participating in the muster parade, the heat from the Sun
was so intense combined with my lack of liquid n food, i began to
see "stars".
But luckily though, nothing happened after i excused myself for a
drink.
Lesson learnt: Never skip breakfast n drink more water! 
Cheers.
C.K