In this chapter:

((1)) The term “designated person” means an immediate family member or someone similarly situated, as defined by the Attorney General.

((2)) The term “immediate family member” means a parent, parent-in-law, grandparent, grandparent-in-law, sibling, spouse, child, or step-child of a murder victim.

((3)) The term “victim” means a natural person who died as a result of a cold case murder.

((4)) The term “murder” means any criminal offense under or any offense the elements of which are substantially identical to such section.

((5)) The term “agency” means a Federal law enforcement entity with jurisdiction to engage in the detection, investigation, or prosecution of a cold case murder.

((6)) The term “cold case murder” means a murder—

((A)) committed more than three years prior to the date of an application by a designated person under ;

((B)) previously investigated by a Federal law enforcement entity;

((C)) for which all probative investigative leads have been exhausted; and

((D)) for which no likely perpetrator has been identified.