The Army is about midway through the initial operational testing and evaluation phase for the M10 Booker, which is designed to provide combat power to the service's Infantry Brigade Combat Teams. Originally called the Mobile Protected Firepower System, the Booker’s IOT&E testing, which began in July, will wrap up in February, according to Ashley John, director of public and congressional affairs for the Program Executive Office for Ground Combat Systems, who answered questions in an email to Inside Defense...