I always find it interesting that carriers (which are highly mobile) are considered sitting ducks. What does that make air bases?
Your username indicates US Navy, correct?
If so, you would understand the threat that a single well placed torpedo or missile poses to disable / sink a ship?
What if advesaries submarines are becoming so silent, they could launch a torpedo attack undetected?
A Chinese Submarine Stalked an American Aircraft Carrier
www.popularmechanics.com/military/navy-ships/news/a18... Proxy Highlight
Nov 6, 2015 ... A Chinese submarine stalked the aircraft carrier USS Ronald Reagan for ... Most, if not all of China’s Improved Kilo submarines are based in Xiangshan, with China’s Eastern Fleet.
For the most part, an adversary cannot readily sneak up on a land base without detection.
Military strategists the world over have come to the conclusion that the Aircraft carrier days are seeing their twilight due to the enormous expensive constructing, operating and maintaining them.
Much bigger bang for the buck from the latest generation silent diesel-electric subs, cruise missiles, and long endurance drones.
A million+ dollar cruise missile can readily disable / destroy a 1.5 BILLION dollar carrier and it’s fancy $100,000,000 aircraft.
Look up the latest US Naval War College papers.
Unsinkable. USAF