The $11 billion US Airways-American Airlines combination will result in the formation of the world's largest airline. Three elements are shaping how this combination and integration will happen and how successful it will be. Each element is a critical leg supporting a successful integration stool. The first key is the driving personality of the US Airways CEO, Douglas Parker. The second is how well the specific challenges involved in combining these two organizations are addressed. The third is how the new airline takes into account the global trends that all airlines have to cope with now and over the next decade.