The `Electromagnetic Air Lift System` is a technology primarily used for option 2, launching aircraft from warships. To explain, these systems are employed in warships, particularly aircraft carriers to catapult airplanes into the air, enabling them to take off in a limited space. This system uses electromagnetic power instead of the traditional steam, generating a smoother and more controlled push and reducing wear and tear on aircraft.

Option 1, launching guided missiles from silos, is not quite applicable here because it usually involves a different kind of technology, such as cold-launch or hot-launch methods.

Option 3, the navigation of nuclear-powered submarines, doesn`t involve the electromagnetic air lift system. These submarines are propelled by nuclear power and use sonar for navigation.

Option 4, the development of reusable rockets, is mainly related to companies like SpaceX where they use rocket propulsion technology, which is distinct from the electromagnetic air lift system. The latter isn`t used to launch rockets into space.