Go research the trailer, when the halo logo pops ups, look in the clouds above, there’s a 5 shaped into the clouds… There’s also a black 5 on the ground under the halo logo… Your Welcome 
Rewatch*
I heard about the “5” in the sand, but never saw it. I did see the “5” in the clouds. I think I’ll check it out.
Edit: I think I found it. Is it backwards in the sand?
No it’s just flatten, they made it hidden so It wasn’t obvious but glad to see I’m not the only one who saw it haha
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At what time is the 5 in the sand? I’ve yet to see it.
Using this as supporting logic is worse than Elvis sightings but I do love the speculation.
Well we know it’s five then. Let’s just wait till the forum name is changed.