Spc. Joshua Jones, left, and Pfc. Richard Bower, both preventive medicine specialists, 227th Preventive Medicine Detachment, 62nd Medical Brigade, check an insect trap during a field training exercise on Joint Base Lewis-McChord, June 20. The 227th PMD notionally deployed to Guiria, Venezuela, where a tropical storm caused floods and presented a real world concern for mosquitos, which are known to spawn in stagnant water and cause widespread vector borne illnesses such as malaria, yellow fever and dengue fever.