It usually should be within your house between that time period. It all depends when the paintball store shipped it out though and how they did it. Usually if the paintball store is a store in the same country as you live it should get to you by that time period.
If not within those 3-5 days then contact Fedex and provide them with the tracking number saying you have not got you package and it is way past due. Just remember it is an "estimate" which means an approximate guess at times the shipping agency can be very busy or under go some problems so you gotta consider that too. I'd say keep watch till the 23rd latest then contact them or if they said 3-5 days and it said it's coming the 23rd complain to their system, you can probably get some benefits if you give them the right details on your probably.
Hope it helped.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.