President Clinton, above, Attorney General Janet Reno and the 13 sitting and retired Supreme Court justices joined about 800 dignitaries, friends and relatives at the National Presbyterian Church in Washington on Thursday for funeral services for the nation's 15th chief justice, Warren E. Burger. "History will record, as it has already begun to, that Warren Burger was one of the greatest chief justices," said federal appeals Judge J. Michael Luttig, a longtime friend who once clerked for Burger. "If only briefly, we who had the privilege of serving the chief justice were able to see the law and life through an elegant and graceful patriot." Burger served as chief justice for 17 years, the longest tenure this century. He died Sunday of congestive heart failure at the age of 87 and was buried at Arlington National Cemetery.