Some people are against all immigration - legal as well as illegal. I'm most definitely not. If we cut off legal immigration, who knows how many productive citizens like Anh Duong we'd turn away. Anh, you did good.

"But, for Duong, a former refugee from Vietnam who came to the United States in 1975 and studied science in Maryland's public schools and universities, it would fulfill an obligation that she had pledged to repay her whole adult life.

When she settled in Maryland 27 years ago, Duong promised herself she would fight for the principles of her adopted homeland. And now, if all went as planned, the BLU-118/B would slice into a tunnel in the Afghan mountains, unleash the chemically engineered hell that she and the rest of the country's top explosives experts had wrought, and America's enemies would die."