WHEN FEDERAL DEFENDANTS ARE ATTRIBUTED A DRUG QUANTITY BASED ON EXTRAPOLATION AND THE CHEMIST FAILS TO TESTIFY AS TO HOW THE EXTRAPOLATION WAS CONDUCTED AND THERE'S NO EVIDENCE IN THE RECORD DOES THIS REQUIRE REVERSAL

WHEN DEFENDANTS RECEIVE A LEADERSHIP ENHANCEMENT UNDER 3B1.1(A) WHICH INVOLVED 5 OR MORE PARTICIPANTS BUT THE 5 PARTICIPANTS ARE NOT CHARGED IN THE INSTANT INDICTMENT BUT ARE CHARGED IN A SEPARATE INDICTMENT IS THE ENHANCEMENT PERMISSIBLE

Whether a leadership enhancement under U.S. Sentencing Guidelines 3B1.1(a) is permissible when drug quantity is extrapolated without chemist testimony and involves uncharged participants