U.S. Defense Secretary Chuck Hagel is pressing Congress to alter military law in order to prevent commanders from overturning sexual assault convictions made in military court. The move follows public outcry after Air Force Lt. Col. James Wilkerson was reinstated and his conviction for aggravated sexual assault overturned. The military has been accused of failing to address an epidemic of assaults in its ranks. Recent statistics show fewer than one-in-10 perpetrators were held accountable after their attacks were reported. Advocates for military victims said Hagel’s proposed change is only a small step toward addressing the systemic problem.