Hmm, the realistic chances of China ever becoming a enemy are infinitely small. The three biggest investors into China booming economy are The United States, Taiwan, and Germany. In that order...
I present my case as follows.
1. China is not the new cold war Era Russia. The US and China are intimately tied in economic relations, and if you hop on over to www.bea.gov you'll see that China exports to our country have increased exponentially for the last decade. The Chinese love capitalism more then anyone, I just visitied Shanghai 2 years ago and it's the most decadent city on the planet! Some say it's crazier (in a good way) then Hong Kong in the 80s, and Hong Kong was the asian party metropolis of choice for a lonnnnng time.
2. The only thing that will prompt China to attack is a declaration of independence from Taiwan. And that grows increasingly improbable, as more then 70% prefer increased peace, or the status quo. Taiwan in fact, has been pouring massive amounts of money into capital investment into China to bank on the fact that former communists are easily trained (same language) and work for dirt... Just for reference, the rich and educated of northern Taiwan overwhelmingly vote for the conservative party, which seeks peace and reconciliation with Taiwan. The "liberal" party there is the one that seeks independence, and basically bribes the ethnic minority and poor farmers. They managed to win by a extremely narrow margin because they used a flawed electoral system similiar to the US.
3. You are MUCH more likely to face off against the Chinese in the open market then on a battlefield. As China's middle class grows and their business continue to thrive, it is perceived both here and abroad that the hardline communist rhetoric drop and human rights will increase. There is no way that China can be a open and capitlastic society and still be run by old school hardline state rules.
Cliff Notes: China isn't the USSR, because they love money and partying, and all of Wal-Mart comes from China. China's main threat to America is that of ecnomic competition, so time to upgrade those professional skills.