U.S. Army Col. John Scott, deputy commander of Clinical Services, 1st Medical Brigade, Muliti-National Corps - Iraq, looks at the screen while performing an Echocardiogram on an Iraqi boy to diagnose a suspected congenital heart problem in order to determine candidacy for surgery on Contingency Operating Base Speicher, Iraq, Sept. 17. The echocardiogram is a non-evasive test that uses sound waves to create a moving picture of the heart which is much more detailed than an X-ray and involves no radiation exposure.