Delta Technical Operations opened a 150,000-lb. thrust engine test cell on Feb. 21 that it says has the highest thrust rating in the world. With its first Trent XWB visit finished and its ramp up to support next-gen Rolls-Royce and Pratt & Whitney engines, Don Mitacek, Delta Airlines Technical Operations senior vice president and Jack Arehart, VP MRO Services, talk with Aviation Week’s Lee Ann Shay in Atlanta about how it is preparing its business for $1 billion annual revenues.