At the same time, we accelerated or increased weapons programs needed to confront real and growing threats -- the Joint Strike Fighter, the Littoral Combat Ship, and more helicopters and reconnaissance support for our troops at the front.

WHITEHOUSE: President Obama Signs National Defense Authorization Act

They also point out that a carrier and its aircraft can perform many more roles than an arsenal ship such as acting as a troop carrier or heliport, or providing aerial reconnaissance or cover to an amphibious landing.

ECONOMIST: The future of the Royal Navy