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This February 2016 file photo provided by the Prince William County Police shows Ronald Hamilton. Lawyers for an Army Staff Sgt. Ronald Hamilton accused of fatally shooting a police officer working her first shift are fighting prosecutors' efforts to bring the sergeant's 11-year-old son in front of a grand jury, Thursday, May 5, 2016. (Prince William County Police via AP)

This February 2016 file photo provided by the Prince William County Police shows Ronald Hamilton. Lawyers for an Army Staff Sgt. Ronald Hamilton accused of fatally shooting a police officer working her first shift are fighting prosecutors' efforts to bring the sergeant's 11-year-old son in front of a grand jury, Thursday, May 5, 2016. (Prince William County Police via AP)

Royals William and Kate in Singapore

12 September 2012

Britain's Prince William and his wife Catherine arrive in Singapore Tuesday, kicking off a nine-day Southeast Asian and Pacific tour marking Queen

Elizabeth II's Diamond Jubilee.