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1. Each Contracting Party shall bear responsibility for any costs associated with exercising border controls for which they are responsible, including, but not limited to, the costs of installing equipment and control bureaux and costs associated with deploying Officers. This paragraph is without prejudice to the Contracting Parties recovering those costs from an Operator as set out within this Article.
2. Each Contracting Party may set up national rules or arrangements to ensure that an Operator shall be required to pay the costs associated with exercising border controls in respect of any Individual Service that it runs to or from the territory of a Host State to the Contracting Party responsible for those costs.
3. When Officers exercise their functions in the Host State referred to in Article 3, the Destination State shall be liable in accordance with its national law for any damage caused by them during their functions.
4. Without prejudice to the exercise of its rights vis-à-vis third parties, each Contracting Party shall waive all its claims against each other for any damage it has sustained, except in cases of gross negligence or wilful misconduct.