Operational duty death relief applies only to specified combat, peacekeeping, disaster, riot, and mine-related circumstances. For the purposes of clause (19) of section 10, death of a member of the armed forces, including para-military forces, in the course of operational duties is confined to specified circumstances such as terrorist or anti-social violence, action against extremists, enemy action in war, peacekeeping deployment abroad, border skirmishes, mine-related operations, and assistance to civil power in natural calamities, rescue work, riots, agitation, or revolts. The death must be certified by the Head of the Department or the service headquarters as occurring in the course of operational duties in one of the specified circumstances.