Kratos Defense & Security Solutions, Inc. revised earnings guidance for the year 2021. The company is adjusting 2021 Revenue guidance range from $810 million - $850 million to $805 million - $815 million, primarily to reflect continued and increased supply chain and customer delays, and COVID related quarantine issues and restrictions, including where are unable to enter certain countries to execute on or deliver systems for customers. The company expected Operating Income in the range of $26 million to $29 million.