CHECKING A DOSAGE U.S. Army Staff Sgt. Michael Elston, a senior medic, looks up medication dosages for treating a patient Jan. 25, 2008, during a combined medical effort at Falahat Primary School in Hasan ad Daryush, Iraq. Elston is assigned to 143rd Field Artillery Regiment, 25th Infantry Division. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 511653-N-KBT68-170.jpg Photo Gallery