Why could a methodology such as extreme programming be good for a military project? What might be its disadvantages?

The agile software development method called extreme programming (XP) has i ts enthusiasts and detractors, and the jury is still out on wheth er it is a better choice compared with the more popu lar agile approaches such as Scrum. Mindful of how important agility is for military software, the US Strategic Command launched a pilot XP project.