In April 2011, during the trial of the civil suit brought by Corrie's parents, an IDF officer testified that Corrie and other activists had spent hours trying to block the bulldozers under his command. He went on to say that it was a war zone "where Palestinian militants used abandoned homes as firing positions and exploited foreign activists for cover". He shouted over a megaphone for the activists to leave, tried to use tear gas to disperse them and moved his troops several times. "To my regret, after the eighth time, (Corrie) hid behind an earth embankment. The D9 operator didn't see her. She thought he saw her," he said.