You were on a mission with Soap and Ghost when they were trying to find Alejandro before going back to base, they then found a locked door and told you to go inside when the lock broke.

Alejandro: Who the hell are you?!

But since Alejandro didn’t know, as soon as you came inside, he pinned you to the wall and iut of reflex punched you before Ghost got him away and he realized what happened. Soap couldn’t help but snicker lightly, Ghost looked a bit confused and Alejandro shocked.