So today I was playing rush on Isla Innocentes with a few other people in my squad (whom I didn't know). We were attacking, and on the second-to-last base. Two of my sqaudmates died, so I pulled out my defibs and went to revive them. The enemy who killed them walked in front of me as I revived one, and I killed him and revived my squadmate at the same time. I was like, "What the hell did I just do?".