 Under the Johnson-McConnell agreement of 1966, the Army agreed to limit its fixed-wing aviation role to administrative mission support (light unarmed aircraft of civilian design).Afterwards, the Army turned its major attention back to the threat of a mid or high intensity conflict in Europe, and doubts reemerged about the value of helicopters in that sort of arena.Some military leaders believed that the helicopter could not survive and perform an essential role in a heavy combat environment.