As if we needed any more evidence that Research In Motion (RIMM) is in big trouble, the Washington Post reports that the Department of Defense plans to open up its secure wireless network to iOS and Android devices for the first time. Specifically, the Post says that the Pentagon “plans to hire a contractor to build a system that will manage and secure at least 162,500 Android devices and Apple products such as the iPad” that eventually “may be expanded to handle 8 million devices.” The new system will give DOD employees more choices for their wireless devices, meaning more people will switch away from the BlackBerry devices that are currently the only ones supported on the network.