embark on

【原文】
Frontier, which had its own bankruptcy reorganization in 2008 and 2009 and was purchased by Indiana-based Republic Airways Holdings Inc., RJET +3.07% has also embarked on a strategy of flying only a few times a week to smaller cities where Southwest doesn't fly, like Knoxville, Tenn.; Fresno and Santa Barbara, Calif.; Bismarck, N.D., and Sioux Falls, S.D.

【単語の意味（日本語）】
～に乗船する、～を開始する