U.S. Marines from the 4th LAR Delta Company conduct a briefing before conducting a dismounted patrol, Oct. 28, 2015. Exercise Trident Juncture 2015 will be held through October and November, predominantly in, over and on the seas around Portugal, Spain and Italy. It is one of a series of long-planned exercises to ensure that NATO Allies are ready to deal with any emerging crisis, from any direction, and that they are able to work effectively with partners in tackling any crisis. Over 36,000 personnel from 30 nations will take part – that includes NATO Allies as well as seven partner nations (Australia, Austria, Bosnia and Herzegovina, Finland, the former Yugoslav Republic of Macedonia, Sweden and Ukraine).