Chosen Solution

While disassembling, at one point I picked up and turned over the back half, and this little triangular(ish) metal piece fell out. I have checked countless disassembly and reassembly guides, pictures, and videos, and I cannot spot it anywhere. Can someone please help me??? http://i.imgur.com/oJgxrjs.jpg

Here you go there is another bracket that goes over the top of that aswell but this one sits like that

See the link: https://d3nevzfk7ii3be.cloudfront.net/ig… it sits under the logic board grounding bracket.