 Some U.S. military bases in Europe now under a heightened state of alert. It's the second highest of five levels. To do a number of concerns, the Pentagon's Sabrina Singh. It's called Senza, a nicotine-free e-cigarette. Tobacco maker R.J. Reynolds says it'll market the product to adults 21 and older. But the campaign for tobacco-free kids isn't buying it. It says with fun-sounding fruit flavors like watermelon frost and berry fusion and brightly colored packaging, the product...