WASHINGTON, March 22, 2007 ? The reconstruction effort under way in Iraq is one of the most extensive and challenging of all time, but also one of the most important, the deputy commander of the U.S. Army Corps of Engineers told the Senate Committee on Homeland Security and Governmental Affairs today. Army Maj. Gen. Ronald Johnson, who served as the first commander of the corps? Gulf Region Division, reported that the Iraqi reconstruction program ?is yielding positive, tangible results every day and has significantly improved the lives of the Iraqi people.? Despite a challenging and often hostile work environment,...