(NYT38) ALPHARETTA, Ga. -- May 31, 2005 -- CLASS-ROOTLESS-5 -- Kathy Link greets her husband, Jim, upon his return from a business trip at their home in Alpharetta, Ga., on Nov. 18, 2004. The Links belong to a growing segment of the upper middle class, executive gypsies. The shock troops of companies that continually expand across the country and abroad, they move every few years. (Nicole Bengiveno/The New York Times)