Casualties can be seen inside a medical evacuation helicopter at the scene after two car bombs targeted U.S. troops near the main avenue leading to the international airport in Baghdad, Iraq (news – web sites) Tuesday, March 15, 2005. Four civilians were killed and seven were wounded, including two police officers, police said. U.S. troops were also wounded, one Humvee was destroyed and two civilian cars were in flames, according to witnesses. (AP Photo/Hadi Mizban)