Dr. Tracy Beth Høeg, acting director of the FDA's Center for Drug Evaluation and Research since December, is leaving her post, according to CBS News. Said one agency source when Høeg was appointed: "Putting Tracy Beth in charge is like dropping an atom bomb." Her departure comes three days after FDA Commissioner Dr. Marty Makary resigned amid internal disputes, including over the administration's decision to approve flavored e-cigarettes over Makary's reported objections.