The Marine Corps has modified the interior layout of the Assault Amphibious Vehicle Survivability Upgrade so that a troop commander can easily exit the vehicle through the ramp in the back, according to the service. Pentagon chief weapons tester Robert Behler noted the problem in a report published Jan. 24. The AAV SU troop compartment was a tight space compared to the legacy AAV and the troop commander could not egress. "Instead, he had to exit through the top-side hatch...