Defense Health Agency. The Defense Health Agency (DHA) is a joint, integrated Combat Support Agency that enables the U.S Army, U.S Navy, and U.S Air Force medical services to provide a medically ready force and ready medical force to Combatant Commands in both peacetime and wartime.
Definition of preemption. 1a : the right of purchasing before others; especially : one given by the government to the actual settler upon a tract of public landb : the purchase of something under this right.
From Wikipedia, the free encyclopedia. Both in common law and in civil law, a rebuttable presumption (in Latin, praesumptio iuris tantum) is an assumption made by a court, one that is taken to be true unless someone comes forward to contest it and prove otherwise.For example, a defendant in a criminal case is presumed innocent until proved guilty.A rebuttable presumption is often associated with prima facie evidence. Rebuttable presumptions in criminal law are somewhat controversial in that they do effectively reverse the presumption of innocence in some cases.or example, a defendant in a criminal case is presumed innocent until proved guilty. A rebuttable presumption is often associated with prima facie evidence. Rebuttable presumptions in criminal law are somewhat controversial in that they do effectively reverse the presumption of innocence in some cases.