; and (B) use phased implementation to allow the Administration and the third party concerned to establish best practices. (e) Prioritization of third party testing The Administrator may prioritize, when appropriate, the field testing of security screening technology and equipment by third parties. 4. Reciprocal recognition of security standards (a) In general The Administrator, in coordination with the European Civil Aviation Conference, shall continue development of a validation process for the reciprocal recognition of security validation processes for recognition of security screening technologies or certification authorities for deployment. (b) Requirement The validation process under subsection (a) shall ensure that the certification process of each participating international security partner or recognized certification authority complies with Administration standards.