Cpl. Jose "Freddy" Velez served in Iraq. His brother, Spc. Andrew Velez, deployed to Iraq and Afghanistan. Both died in their early 20s. They are survived by their sister, Monica.
"My mom left us when I was 7, so my dad was a single parent," Monica says. "And I did all the household chores. I got the boys dressed for school, I taught them how to ride their bike, I taught them how to read and write."
One of her favorite memories is when both brothers came back from basic training and told her she could no longer be bossy.
This report is part of "Those Who Serve," an occasional series that looks at those who wear the military uniform during a time of war.
It's early afternoon at a small outpost in eastern Afghanistan, and U.S. Army Sgt. Chris Cunningham, with the 10th Mountain Division, heads into a long, dusty tent to teach Afghan soldiers the basics of map reading.
After the sun sets, American soldiers help Afghan soldiers outside the wire. They pop artillery shells containing what's called an illumination round.