helolumpy, will we always be willing or able to keep all the SLOCS open? Personally, I do not see any possibility of a strong and vibrant USN in the year 2025 or so without some drastic, even radical, change in leadership (civilian/Congressional). I will shed a tear for our own defense woes in the mid-future.
To answer you question, I ask you to consider the capture of the Maersk Alabama. Did that issue really require the amount of attention that it received? Why did an Adminstration that was not exactly chomping at the bit to take on more "overseas contingency operations' stand up a JTF for counterpiracy ops? We never stood up a counterpiracy force in the Strait of Malaca and piracy has been going on far longer and that Strait (SOM) is a far more important waterway economically speaking.
I offer that it was because a US flag vessel got captured and that played well on the news. Once it becomes apparent tothe media that our economy is being impacted by a lack of sea contol and our SLOCs are being interdicted by pirates, terrorists or a foreign state, you can expect that same type of response that the Maersk Alabama got, to happen again.
In 20 years our Navy may look somewhat different from what our CNO envisions. However the force structure debate ends up, I honestly believe that the United States will maintain a strong blue-water navy at the expense of the other services. It will be tough for the American economy to continue without free and unfettered trade, and we'll require a stong maritime force to maintain that unfettered trade in the future.