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.
presumption-a kind of discourtesy in the form of an act of presuming; his presumption was intolerable. offense, offensive activity, discourtesy, offence-a lack of politeness; a failure to show regard for others; wounding the feelings or others.