An influential senator is concerned about the current requirements the Navy has proposed for the Unmanned Carrier-Launched Airborne Surveillance and Strike platform -- its first unmanned combat aircraft program -- and requests the service extend the use of another remotely piloted system, according to a recent letter. On March 24, Senate Armed Services Committee Chairman John McCain (R-AZ) sent a letter to Defense Secretary Ashton Carter, stating the Navy has placed a disproportionate emphasis on unrefueled endurance to enable sustained...