Growing up in Wisconsin, Deedra Irwin loved to run. She had never heard of cross country skiing. But a friend introduced her to the sport as a winter training opportunity. After a strong high school and college career at Michigan Tech, she was ready to retire until another friend, biathlete Joanne Reid, introduced her to biathlon. Now in the national guard biathlon program, Irwin is a rising star for U.S. Biathlon. Heartbeat explores her pathway and what made biathlon so exciting for her, and the opportunities both U.S. Biathlon and the national guard are providing her.