DLA Images

Pfc. Stefan Moreno, petroleum supply specialist, 574th Composite Suppy Company, performs an American Petroleum Institute (API) gravity test on a batch of fuel at Erbil, Iraq, Oct. 16, 2019. The API gravity test measures how heavy or light petroleum is compared to water, which is used to compare densities of petroleum liquids.

Photo by: Sgt. 1st Class Joshua Steinbeck |  VIRIN: 191016-A-OS319-442.JPG