Sarah Palmer Help

Ok, a friend of mine and I are arguing about something.

In the Last Cut-scene of “reclaimer” we are arguing about who is the Spartan with the group that Del Rio orders to arrest Master Chief for defying a direct order

I make the Agrument that it is Sarah because it looks like her, AND she has the same white Scout armor

My friend says its not because A: Its too far away to be sure and B: Del Rio calls the spartan Lieutenant, and Palmer is a Commander

I Argue that She’s a commander during Spartan ops, 6 months AFTER the events of halo, Sarah could have gotten a promotion like Lasky did

But she argues that to go from Lieutenant to Commander would be too much of a jump.

Can I get some help here? Who do you think is Right? Is it Sarah Palmer Del Rio orders to arrest the Chief or is it a random Spartan?

Yes, Del Rio did ordered Palmer to arrest Chief.

As if for her promotion, I don’t really know what to say, but this may help: http://en.wikipedia.org/wiki/United_States_Navy_officer_rank_insignia