The Alabama Army National Guard members rushed to help a man who collapsed outside a rest area in Poland.
The 22-year-old cadet was found unresponsive during land navigation training.
Spc. Jaylin Perez died Tuesday after receiving treatment for severe electrical burns sustained last week while on duty in Germany, the Army said.
Staff Sgt. Saul Fabian Gonzalez and Sgt. 1st Class Emmett Wilfred Goodridge Jr. died this week in non-combat incidents.
By Beth Sullivan
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