Federal prosecutors began an aggressive cross-examination of Aimee Bock Thursday in the Feeding Our Future trial. Bock is accused of leading a $250 million fraud scheme.

Feeding Our Future defendant Salim Said will testify in his own defense, but not before his attorneys call a couple of other witnesses to the stand.

The leader of Feeding Our Future denied taking kickbacks from meal providers who defrauded the federal government, describing herself Wednesday as a tough watchdog of taxpayer funds who booted dozens of sites from her organization and reported any fraud concerns to state regulators.