Scientists who want to further their research in nuclear weaponry. After ww2, there was an epic process of demobilization for the countries involved. In the us, this process was painful, as different branches wanted other branch budgets to be cut. The leaders of the navy said they would take charge of the nuclear weapons and build ships to carry planes with these warheads. The leaders of the air force said that they will build new b-36 bombers to carry these warheads and be able to fly anywhere. Used the development of new weapons to protect their service branch budgets: domestic political factors; political parties or political leaders who stake their reputation on building nuclear weapons. If you had the bomb, you counted, if you didn"t, you were second tier/rate: big powers have national airlines, performance in olympic games, hosting the olympic games.