Sometimes, even bonds earn second chances -- and the results can be impressive for fixed-income investors.All right, I confess. I've spent much of my investing life glossing over bonds. That 60% stocks/40% bonds investment combo that the experts talked about for decades? Not for me. Try 100% stocks. However, with age comes wisdom -- and the need to reduce portfolio risk.So when interest rates surged a few years ago, I figured it'd be an opportune time to at least evaluate some fixed income exchange-traded f ...