Exercise Flint Lock News Today

Rosemary. isis is extending its reach well beyond the middle east which is why u.s. and british forces are operating in chad now. they are trying to prevent the radical islamist group boko haram from teaming up with isis. arwa damon reports. >> reporter: nighttime, and nigerian special navy forces gather around a campfire. the drop in temperature a much-needed break from the stifling heat and intense training. for the nigerian troop and their chadian counterparts this annual exercise flint loc...