Kimbrell received her commission in 1998 after graduating from the USAF Academy, later she attended Undergraduate Pilot Training at Laughlin AFB (
Val Verde County, Texas) and was awarded her pilot wings in August 1999. She then completed Introduction to Fighter Fundamentals training at Randolph AFB (
Bexar County, Texas) in November 1999. In August 2000, she graduated from her initial F-16 training at Luke AFB (
Maricopa County, Arizona) becoming the first African American female fighter pilot in the USAF. In July 2004, she graduated from the Joint Fire Control Course and was assigned to the 15th Air Support Operations Squadron. Later she deployed as the 2nd Brigade Air Liaison Officer in support of
Operation Iraqi Freedom. In June 2007, she was assigned to the 31st Fighter Wing, Aviano AB Italy where she served as Assistant Director of Operations for the 555 Fighter Squadron. ==Personal life==