I think this whole projection of power trip seems to be overlooking one salient point - - even if it works (which it didn't in Nam, where the U.S. had lots of carriers deployed,) it's only gonna work as long as you're not stepping on the toes of someone who can deploy more carriers than you can, or is rapidly moving towards that status. China alone, for example, is soon going to be able to produce more and better everything than the U.S.A., and that includes weapons systems and it certainly will include carriers. China with one other major ally will likely dwarf the U.S.A. Projecting power into the backyards of Russia, China or India may not be such a great idea when the power that you are projecting is overmatched by the power of the people you are projecting it on.
Billions of people have come to hate and loathe the U.S. and that hatred can and will ultimately translate into direct action if the U.S. continues on its present path. Right now, it might be able to get away with its usual shit - - although you have to wonder at the "power" of a nation of 300,000,000 held at bay by a small but determined nation of only 23 million. The one sure thing I know is that, whatever the actual power advantage the U.S. enjoys vis a vis the rest of the world, it is shrinking fairly rapidly. Not that the U.S. is losing its punch, but that its rivals are gaining theirs.
I think the old paradigm of "projecting power" needs to be re-thought. Not that that'll happen - - your system of lobbying and campaign financing virtually guarantees the elimination of honest, intelligent leadership in favour of total ass-holes. The incumbent being a perfect example, among many. One day you'll do exactly what Hitler did - - project some power onto the wrong people. Unite an unbeatable coalition against you. Convince the world that nothing but your total destruction can save the human race and/or the planet. Too bad I won't live to see that day.