General Electric Co. and the French firm...

General Electric Co. and the French firm SNECMA are being awarded a $1.1-billion U.S. defense contract for 267 engines for KC-135 tanker planes and RC-135 reconnaissance planes, the U.S. Air Force said. . . . PepsiCo Inc. is set to unveil this week a new look and new advertising for Diet Pepsi in an effort to halt the slide in its market share. . . . Minneapolis-based Carlson Wagonlit Travel’s Associate & Leisure Co. said it will acquire International Franchise Group, vaulting Carlson to the largest travel agency franchiser in North America. Terms were not disclosed. . . . British Telecommunications shareholders approved its planned $25-billion purchase of the 80% of MCI Communications Corp. it doesn’t own.