Subchapter III. Enforcement. § 16–4603.01. Definitions. § 16–4603.02. Enforcement under Hague Convention. § 16–4603.03. Duty to enforce. § 16–4603.04. Temporary visitation. § 16–4603.05. Registration of child-custody determination. § 16–4603.06. Enforcement of registered determination. § 16–4603.07. Simultaneous proceedings. § 16–4603.08. Expedited enforcement of child-custody determination. § 16–4603.09. Service of petition and order. § 16–4603.10. Hearing and order. § 16–4603.11. Warrant to take physical custody of child. § 16–4603.12. Costs, fees, and expenses. § 16–4603.13. Recognition and enforcement. § 16–4603.14. Appeals. § 16–4603.15. Role of Attorney General for the District of Columbia. § 16–4603.16. Role of law enforcement. § 16–4603.17. Costs and expenses.