Keywords: US Navy 110203-N-2531L-282 Hospital Corpsman 1st Class Michael Astorga crawls through a mud pit during a tactical combat casualty care field exerci.jpg en SAN DIEGO Feb 3 2011 Hospital Corpsman 1st Class Michael Astorga crawls through a mud pit during a tactical combat casualty care field exercise at Naval Medical Center San Diego The exercise is a pre-deployment requirement Those who pass the course will be trained in managing the most common battlefield combat injuries U S Navy photo by Mass Communication Specialist 3rd Class Samantha A Lewis/Released 2011-02-03 110203-N-2531L-282 Navy http //www navy mil/view_image asp id 97582 U S Navy photo by Mass Communication Specialist 3rd Class Samantha A Lewis PD-USGov-Military-Navy Naval Medical Center San Diego |