Our class has an emergency relay system to ensure that everyone in the class gets the message in case of emergency. This system goes like this, we are divided into 3 groups. In case of any emergency, Mr Yeo call to Shamus, Harsh and me. The three of us will proceed to call our fellow classmates that are in our groups. The last person of each group will call Shamus, Harsh or me (depends on which group are you in) to let us know that all of you have received the message.. Finally, three of us will call Mr Yeo to inform him that the class has been notified.
So the emergency call-line branches out like this:
So, Ming En, Mayur and Bryan will have to call Shamus, Harsh and me respectively once they receive the message. However, just think about what if somebody who is in the middle does not get the message on time (you are unable to reach the person)? Then, you will have to contact the next person and there will be one more message to pass on.
For example, if Grace can't get Sue Lun, then Grace has to skip Sue Lun and contact Zhi Qi. Grace also has to inform Zhi Qi that Sue Lun can't be contacted and Zhi Qi will pass the message on until to the last person. Then Bryan will have to call me and inform me that Sue Lun did not get the message. Meanwhile, Grace needs to continue contacting Sue Lun.
I hope everything is clear now. Thank you for reading this post.