Video: Military top brass grilled over sexual assaults 

As Congress investigates the growing epidemic of sexual assaults within the military, the Senate Armed Services Committee holds a hearing to demand answers from top uniformed leaders about whether a drastic overhaul of the military justice system is needed, on Capitol Hill in Washington, Tuesday, June 4, 2013. From left to right are Commandant of the Marine Corps Gen. James F. Amos, Judge Advocate General of the Army Lt. Gen. Dana K. Chipman, Army Chief of Staff Gen. Raymond T. Odierno, Joint Chiefs Chairman Army Gen. Martin Dempsey,  Legal Counsel to the Chairman of the Joint Chiefs of Staff Brig. Gen. Richard C. Gross, Chief of Naval Operations Adm. Jonathan W. Greenert, Judge Advocate General of the Navy Vice Adm. Nanette M. DeRenzi, Air Force Chief of Staff Gen. Mark A. Welsh III, and Judge Advocate General of the Air Force Lt. Gen. Richard C. Harding.   (AP Photo/J. Scott Applewhite)
As Congress investigates the growing epidemic of sexual assaults within the military, the Senate Armed Services Committee holds a hearing to demand answers from top uniformed leaders about whether a drastic overhaul of the military justice system is needed, on Capitol Hill in Washington, Tuesday, June 4, 2013. From left to right are Commandant of the Marine Corps Gen. James F. Amos, Judge Advocate General of the Army Lt. Gen. Dana K. Chipman, Army Chief of Staff Gen. Raymond T. Odierno, Joint Chiefs Chairman Army Gen. Martin Dempsey, Legal Counsel to the Chairman of the Joint Chiefs of Staff Brig. Gen. Richard C. Gross, Chief of Naval Operations Adm. Jonathan W. Greenert, Judge Advocate General of the Navy Vice Adm. Nanette M. DeRenzi, Air Force Chief of Staff Gen. Mark A. Welsh III, and Judge Advocate General of the Air Force Lt. Gen. Richard C. Harding. (AP Photo/J. Scott Applewhite)

All six members of the military's Joint Chiefs of Staff appeared before the Senate Armed Services Committee Tuesday to discuss the sexual assault crisis in the armed forces, acknowledging it's 'like a cancer' that could destroy the force.