COL Keenan’s most recent assignment was as the Chief of Staff, U.S. Army Warrior Transition Command.

COL Keenan entered the Army as a Nurse Corps Officer in July 1986. She has enjoyed a variety of assignments as a Staff Nurse Oncology/Hematology, Dwight David Eisenhower Army Medical Center, Fort Gordon, Georgia; Charge Nurse, Emergency Department, Dwight David Eisenhower Army Medical Center, Fort Gordon, Georgia; Nurse Counselor, 2nd Recruiting Brigade, United States Recruiting Command, Fort Gillem, Georgia; AMEDD Officer Basic Course Nurse Advisor, AMEDD Center and School, Fort Sam Houston, Texas; Chief Nurse, A Co, 168th Medical Battalion (AS), Camp Red Cloud, Korea; Head Nurse, Emergency Treatment Section, 21 Combat Support Hospital, Fort Hood, Texas; Nurse Methods Analyst, Darnall Army Community Hospital, Fort Hood, Texas; Chief Nurse, Department of Outlying Health Clinics, 67th Combat Support Hospital, Wuerzburg, Germany; Chief Nurse/Executive Officer, 67th Combat Support Hospital (Forward), Camp Bondsteel, Kosovo; Army Congressional Fellow, Senator Kay Bailey Hutchison, (R-TX), Washington, DC; Chief, Congressional Liaison Office, Office of the Army Surgeon General; and Garrison Commander, Camp Bullis, Texas. COL Keenan served as the Deputy Commander for Nursing, Dewitt Army Community Hospital, Fort Belvoir, Virginia until April 2007.

COL Keenan was commissioned from Henderson State University with a Baccalaureate of Nursing. COL Keenan also holds a Master of Science in Nursing Administration from the Medical College of Georgia and a Masters in Strategic Studies from the U.S. Army War College. COL Keenan’s military education includes the Army Medical Department Officer Basic and Advance Courses, the U. S. Army Command and General Staff College and the U.S. Army War College.

Her awards and decorations include the Legion of Merit, the Meritorious Service Medal with four Oak Leaf Clusters, the Army Commendation Medal with Four Oak Leaf Clusters, and the Army Achievement Medal. She has earned the Expert Field Medical Badge, the Parachutist Badge, the Air Assault Badge, and the Army Staff Identification Badge. COL Keenan was the General Douglas MacArthur Leadership Award winner for the Health Services Command in 1988, a Regional Finalist, White House Fellowship Program in 1992, and an Army Congressional Fellow for FY 2001. She is a member of the Order of Military Medical Merit and a Fellow in the American College of Healthcare Executives.