The data are based on the Uniform Crime Reporting (UCR) Program and involve 8,000 law enforcement agencies that supplied information to the UCR Program during 1998. In tabulations pertaining to weapons used, personal weapons are considered to be any part of the body that can be employed as a weapon. The first section of the report contains statistics on felonious or accidental deaths of duly sworn local, State, and Federal law enforcement officers. Sixty-one law enforcement officers. -- 55 males and 6 females, averaging 10 years of experience - were killed in 1998. Of the 61 officers, 16 lost their lives in arrest situations, 7 in drug-related situations, 3 in encounters with robbery suspects, and 6 in encounters with assailants suspected of other crimes. Patrol officers accounted for 38 of the 61 victims. The second section tabulates data pertaining to assaults on sworn city, county, and State law enforcement officers. The third section includes data on assaults on criminal justice officers employed by five Federal Government entities: Departments of the Interior, Justice, and Treasury; U.S. Capitol Police; and U.S. Postal Service. 50 tables