KXLY July 24, 2021 1:43 PM By Veronica Stracqualursi, CNN Posted: July 24, 2021 1:43 PM Deployed to Iraq in 2003, US Marine Corps field radio operator Joanna Sweatt took cover in tight-spaced bunkers for hours at a time — a tour of service laden with the stresses of being in a war zone that led to a blood clotting disease. Now, more than a decade after she was first diagnosed with deep vein thrombosis and medically discharged from the Marine Corps, the 43-year-old credits Arizona’s vote-by-mail system with granting her access to the ballot box last November. “Standing in long lines is not practical for me,” she said.