The DoD established the military munitions response program (MMRP) in 2001 to clean up sites known to be or suspected of being contaminated with military munitions and related hazardous substances. Cleanup of sites on active and base realignment and closure installations is the responsibility of the military service ¿ Air Force, Army, Navy, or Marine Corps ¿ that currently controls the land. This report assessed the: (1) MMRP staffing and funding levels; (2) progress DoD has made in cleaning up munitions response sites; (3) extent to which DoD has established MMRP performance goals; and (4) extent to which DoD collects data on factors influencing project duration, as well as the accuracy of its cleanup cost estimates. Illustrations.