Spc. Danell Williams, of Leamington, N.C., welds a steel plate to the inside bed of an Iraqi Security Force pickup truck at Forward Operating Base Hammer, Aug. 18. Photo by Pvt. Jared N. Gehmann, 3rd Brigade Combat Team. BAGHDAD — As security improves here, U.S. forces are patrolling the streets much less. But behind the scenes, U.S. Paratroopers are helping their Iraqi partners in other ways. While tactical improvements are evident, some Iraqi Security Force (ISF) units still lack sufficient protection needed during mounted movements throughout the capital city. In an effort to support the combat strength of the ISF,...