Security Checkpoint (IMAGE) University of Maryland Caption "Our researchers have tracked over 100 foiled plots in the past decade," says UMD's Gary LaFree. "Most of these would be classified as homegrown terrorism." Credit START Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.