A Boeing KC-46A Pegasus takes off at Yokota Air Base, Japan, Oct. 25, 2018, during a system evaluation. This is the first time the KC-46A visited Japan. The flight is to support an initial evaluation by the USAF of the KC-46A’s integrated mission system suite as well as its ability to conduct worldwide navigation, communication and operation. (U.S. Air Force photo by Yasuo Osakabe) WASHINGTON — Boeing expects to log a $1.7 billion loss across several defense programs when it announces its