Sgt. 1st Class James Marcum, chief of smoke for the 138th Field Artillery Brigade bridge team, prepares his team for firing the 105mm Howitzer cannons during the 2015 Thunder Over Louisville April 18.

---

Size: 1274px × 1962px
Photo credit: © RP Photo / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 138th, airforce, airmen, army, artillery, brigade, conflict, field, forces, guard, kentucky, louisville, marine, military, national, navy, news, politics, sailor, soldier, states, thunder, united, war