Army Sgt. David N. Arrieta, a Houston native with the 451st Civil Affairs Battalion, gives a situation report to Sgt. 1st Class Thaddeus U. Brazelton, also from the 451st Civil Affairs Battalion, during a Medical Readiness Training Exercise as part of Beyond the Horizon, May 11. BTH is a combined medical and engineer mission that provides humanitarian assistance to the people of El Salvador. (U.S. Army photo by Sgt. Rigo Cisneros)