Should my 5 year old be in the delivery room?

Soon, my husband and I will be ttc baby #2, 
And I would love this to be an amazing experience since I have a 5 year old son. 
I want him to be involved in every single event that has to do with his sibling. 
How can I start explaining him where baby's come out from since I want him in the delivery room with me. 
Should he see the whole action when that day comes? (Baby coming out from vagina). 
Thank you in advance :)! 
No rude comments please.