DETROIT ARSENAL, MI -- Army force structure changes, which would adapt the service to multidomain operations, could come around 2030, Gen. Joseph Martin, the vice chief of staff of the Army, told Inside Defense in a recent interview. "I think 2030 is a good focal point," Martin said. "There's going to be more that we can talk about in the future, what we can talk about in terms of force structure, force design and how we’re going to transform...