Whats with Chief's armour? (Halo 5 trailer)

Games Halo 5: Guardians
#1

Halo 5: Guardians Agent Locke ad:
http://youtu.be/6QHo0t9wjzA

So watching this, I noticed something. As we see Locke standing over Chief, I noticed something. Where is the scar on the Chief’s chest piece?
(Chief’s scar on chest piece: http://imgur.com/K6Sh3Y7 )
(Chief in the trailer: http://imgur.com/lTMPK2a )

The scar we see in Halo 4 is somewhat of an iconic mark on Chief’s armour, but where is it in the trailer?

#2

Gets fixed at the end of Halo: Escalation issue 10.

#3

> 2533274837720524;2:
> Gets fixed at the end of Halo: Escalation issue 10.

This