The WRAIR Sleep Research Center (SRC), part of the Behavioral Biology Branch, is the Department of Defense’s premier sleep research facility. WRAIR has conducted sleep studies since the 1950s to characterize the acute performance and physiological impacts of sleep loss. The SRC develops strategies (e.g. sleep banking), software (e.g. 2B-Alert), hardware (e.g. wrist actigraphy) and guidance for fatigue management in the operational environment.