Sean Carruthers talks to Mark Karnes, Managing Director of Etymotic Research Inc., about their line of noise-cancelling protective earwear .  From the EB15 High-Fidelity Electronic BlastPLG Earplugs that are made for military use to the etyBLU2 devices that have found popularity in the consumer market, these are definitely high-tech examples of ear gear. Stay tuned to butterscotch.com for more up to the minute video coverage from the CES 2011 show floor.