If you do, feel free to add me on XBOX Live. I have gotten Endure 3 times for different groups of people that needed it.
I really enjoy playing Firefight and getting Endure so I am always willing to help as long as you're not expecting me to babysit you and do all the work- if you're dying too much there won't be any lives left for the rest of us.
If you just need an extra man for the score achievements, Déja Vu, or anything like that I can help as well.
Simply click HERE and submit a friend request with a message specifying what you need help with.
See you on the battlefield.