Heidi Squier Kraft received her PhD in clinical psychology from the University of California, San Diego School of Medicine in 1996. After several years as a flight psychologist with the US Navy, she gave birth to twins in 2002. In February 2004, she deployed to Iraq for seven months. She left active duty in March 2005 after nine years in the Navy, and is now Deputy Program Coordinator, US Navy Combat Stress Control. She lives in San Diego with her husband and kids.