WikiLeaks Gaza: US Army directly, physically, secretly, enforced Gaza blockade --Cable 08CAIRO1878, Strategy for the Gaza Border 10 Sep 2011 ...The U.S. Army Corps of Engineers (USACE) conducted site surveys on the Gaza Border in June and at a training site in Giza, near Cairo, to support the GOE in deploying a U.S.-supplied seismic-acoustic counter-tunneling system (ref B), aiming to deploy this equipment on the Gaza border by early 2009. The GOE's agreement to accept this equipment after initial resistance in 2007 is a sign of increased bilateral cooperation on border security, and the new technology, which can detect the sounds of tunnel digging and movement through tunnels, should improve GOE interdiction efforts.