Robert Z. Hollingsworth was arrested in January.

Robert Z. Hollingsworth, an airman first class at Dover Air Force Base, was sentenced Thursday to five years in prison.

The 27-year-old Byron, Illinois, native also will serve 10 years of supervised release following his 60 months in prison.

Prosecutors say Hollingsworth was arrested in January and tried in June before U.S. District Judge Richard G. Andrews of the District of Delaware.

Acting US Attorney for the District of Delaware David C. Weiss said Hollingsworth had collected more than 10,000 images and 3,000 videos of children engaging in sexually explicit conduct, including but not limited to sexual intercourse. More than 600 of those images depicted prepubescent children or children younger than 12 years of age. Of the 162 identified victims, 16 came forward seeking restitution. The U.S. District Court awarded $48,000 in total restitution, for the known victims.

Weiss said, “Our office will do whatever is necessary to protect the most vulnerable among us – our children – from the abhorrent shadow industry that produces, distributes and collects child pornography and from those who lurk in its base marketplace.”

The case was brought as part of Project Safe Childhood, a nationwide initiative to combat the growing epidemic of child sexual exploitation and abuse launched in May 2006 by the Department of Justice. Led by U.S. Attorneys’ Offices and CEOS, Project Safe Childhood marshals federal, state and local resources to better locate, apprehend and prosecute individuals who exploit children via the Internet, as well as to identify and rescue victims.